question string | choices list | answer string | rationale string | dataset string |
|---|---|---|---|---|
Sally has $100 in pennies. She wants to stack her pennies into three large piles and five small piles. The large piles are all the same size, and the small piles are all the same size. Additionally, Sally wants all of the small piles put together to equal one of the large piles. How many pennies does Sally put in one of the small piles? | [
"250 pennies",
"100 pennies",
"2500 pennies",
"500 pennies"
] | D | B. Each large pile gets 1/4 of the total pennies. Each small pile gets 1/5 of the remaining 1/4 of the total pennies. So each small pile gets 1/20 of the total pennies. $100 is 10,000 pennies. 1/20 of 10,000 is 500, so: 500 pennies. | aqua_rat |
What tastes flavors? | [
"flamingos",
"metals",
"stars",
"bicycles"
] | A | Flamingos have specialized taste buds that allow them to detect flavors in their food, particularly as they filter-feed on small organisms in water. | openbookqa |
Identity '1' in the illustration depicting compliance of lungs: | [
"Inspiration",
"Inspiration Air filled",
"Expiration air filled",
"Expiration"
] | A | InspirationThe illustration shows a Pressure-volume curve of the lung during inspiration and expiration. | medmcqa |
There are 10 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes? | [
"60",
"120",
"15",
"30"
] | C | 4 people: shrive 555, cranky, karishma and Mr X
We have to shake hands in this group such that each person shakes hands with 3 people.
So shrive555 starts:
shrive555 - craky : 1 handshake but 2 hands were shaken. shrive 555's and cranky's
shrive 555 - karishma : 1 handshake but 2 hands were shaken. shrive 555's and karishma's
shrive 555 - Mr X : 1 handshake but 2 hands were shaken. shrive 555's and Mr X's
Now shrive 555 has shaken hands with 3 people. There were 3 handshakes. But 6 hands were shaken.
Now, when all 4 of us shake hands with 3 people, each person's hand will be shaken 3 times. i.e. in all 12 hands will be shaken. But they will add up to only 6 handshakes.
The other 3 handshakes will be:
cranky - karishma
cranky - Mr X
karishma - Mr X
So all of us have shaken hands with exactly 3 people.
Similarly when there are 10 people, each person shakes his hand 3 times. So in all 30. But 2 of these hands combined to make one handshake. So we will get only 15 total handshakes. | aqua_rat |
Which of these must the factor F of the product of four consecutive even integers:-
1) 48
2) 64
3) 96
4) 192
5) 80 | [
"All of them",
"F=1,2,3,4 only",
"1,2 only",
"F=2,3 only"
] | B | Let the four variables be a< b< c< d.
Assume a worst case scenario where the a equal to a prime number (hence odd).
therefore
a = divisible by 1
b = a + 1 (divisible by 2)
c = a + 3 (divisible by 3)
d = a + 4 (divisible by 4)
therefore
each answer choice must be divisible by 2 x 3 x 4 = 24 | aqua_rat |
Lactose on hydrolysis yeilds ? | [
"One molecule of glocuse and one molecule of galactose",
"2 molecules of glucose",
"One molecule of glocuse and one molecule of fructose",
"2 molecules of fructose"
] | A | One molecule of glocuse and one molecule of galactose | medmcqa |
Nerve supply of supinator is similar to which of the following muscle | [
"Brachialis",
"Pronator quadratus",
"Extensor digitorum",
"Brachioradialis"
] | C | Supinator muscle and extensor digitorum both are supplied by posterior interosseus nerve, a branch of radial nerve at the floor of cubital fossa. - Muscle supplied by Radial nerve - In Radial groove - Triceps and Anconeus Out of radial groove - Brachioradialis and extensor carpi radialis longus By deep motor branch a.k.a Posterior interosseus nerve - Supinator Extensor digitorum Extensor carpi ulnaris Extensor carpi radialis brevis Extensor digiti minimi Extensor pollicis longus Extensor pollicis brevis Abductor pollicis longus Extensor indices Pronator quadratus -supplied by anterior interosseous nerve, branch of medial nerve | medmcqa |
Which element is present in Glutathione peroxidase? | [
"Selenium",
"Zinc",
"Copper",
"Magnesium"
] | A | Selenium* Selenium would be the mineral most specifically related to antioxidant function.* There are at least 35 antioxidant Se proteins and include selenoprotein P, five glutathione peroxidases and three thioredoxin reductases (TrXRl). Most recent research indicates TrXRl reduces harmful ROS and facilitates gene expression of other cytoprotective antioxidants* Selenium as part of glutathione peroxidase (GSH-Px) is the 2nd line of defense as the enzyme destroys peroxides and hydroperoxides.* Apart from selenium, Mn, Cu, Zn, Fe help to maintain the efficient levels of endogenous antioxidants in the tissues. | medmcqa |
23, 29, 31, 37, 41, 43, 47, 53, 59, (...) | [
"61",
"47",
"53",
"45"
] | A | All are prime numbers in their order, starting from 23
Hence, next number is 61 | aqua_rat |
Which of the following used as a antibacterial | [
"Lytic bacteriophage",
"Lysogenic bacteriophage",
"Plasmid",
"Transposon"
] | B | B. i.e. (Lysogenic bacteriophage) (461, 56, 60-A 84- CP)* The segments of DNA between chromosomal and extra chromosomal DNA molecules within the cells are Transposons (Jumping genes)* Bacteria may possess extranuclear genetic elements consisting of DNA these cytoplasmic carriers of genetic information are termed PLASMOIDS OR EPISOMES, are capable of autonomous replication (Independent replicons) by their ability to transfer genes from one cell to another* Plasmids have become important vectors in genetic engineering**.BACTERIOPHAGES - are viruses that infect bacteria (Lytic agent was a virus and gave it the name bacterio phage)* Important role in the transmission of genetic information between bacteria by the process of transduction**Lysogenic conversion or phage conversion - used as cloning vectors in genetic manipulations. The presence of high concentrations of phage particles upto 108 per ml in some natural waters suggests that they may have role in the control of bacterial population (Antibacterial) in such environments* Bacteriophages are mostly needed for - Bacterial identification* | medmcqa |
Antisera is obtained from: | [
"Guinea pig",
"Horse",
"Rabbit",
"Rat"
] | B | ANTISERA: -Antisera are usually prepared in horses -provide passive immunization - Immunoglobulin fraction is concentrated using ammonia sulfate & some products are fuher treated with some enzymes to decrease reactions to foreign proteins. -Antisera are used against diseases like Diphtheria, Tetanus, Rabies. | medmcqa |
Nucleus of basal ganglia is? | [
"Caudate",
"Dentate",
"Red nucleus",
"Thalamus"
] | A | CaudateThe basal ganglia are a group of structures found deep within the cerebral hemispheres (a group of subcortical nuclei). The structures generally included in the basal ganglia are the caudate, putamen, and globus pallidus in the cerebrum, the substantia nigra in the midbrain, and the subthalamic nucleus in the diencephalon. | medmcqa |
Students at a school were on average 180 cm tall. The average female height was 170 cm, and the average male height was 184 cms. What was the ratio F of men to women? | [
"4:1",
"5:2",
"5:1",
"3:1"
] | B | (A)F= 184 x 5 + 170 x 2 = 1260.A | aqua_rat |
Submucosal glands are present in the following pa of gastro intestinal tract? | [
"Anal canal",
"Colon",
"Duodenum",
"Stomach"
] | C | The major distinguishing feature of this C-shaped first pa of the small intestine duodenum is the presence of duodenal (Brunner's) glands in the submucosa. The mucous cells of these glands produce an alkaline secretion (pH 8.1-9.3) that enters the lumen through the crypts. It protects the duodenal lining from the acidity of the chyme and raises the luminal pH to optimize pancreatic enzyme activity. | medmcqa |
Shigellosis is common in travelers to developing countries. Infection is commonly acquired through the | [
"Skin",
"Respiratory tract",
"Gastrointestinal tract",
"Genital tract"
] | C | Organisms may be transmitted in a number of ways, such as by air, food, hands, sexual contact, and infected needles. However, for each disease or disease category, there is usually a portal of entry not always unique to the organism. The respiratory tract is a common portal of entry to such airborne organisms as M. tuberculosis. This is why respiratory precautions must be taken when patients are harboring viable M. tuberculosis.The gastrointestinal tract is usually infected from ingestion of contaminated food or water (Shigella, Salmonella, Campylobacter) or by an alteration of the normal microbial flora such as with C. difficile disease. The skin is a tough integument and intact, is resistant to most infectious organisms except those that may break down human skin. Breaches of the skin as by wounds, burns, and the like predispose patients to a variety of infections such as tetanus caused by wound contamination with spores of C. tetani, or direct infection by Staphylococcus, Streptococcus, or Gram-negative rods (such as Serratia or Pseudomonas).The genital tract may become infected either by sexual contact or by alteration of the genital environment as often occurs with yeast infections. Several bacteria such as N. gonorrhoeae, Chlamydia, and Treponema pallidum are transmitted by direct sexual contact with infected partners. | medmcqa |
In MI the type of necrosis is: | [
"Caseous.",
"Gangrenous.",
"Liquefactive.",
"Coagulative."
] | D | Sequential Pathologic Changes in Mycocardial Infarction | medmcqa |
A person crosses a 720 m long street in 12 minutes. What is his speed in km per hour? | [
"4.8",
"5.4",
"3.6",
"5.5"
] | C | Speed = 720/(12x60) m/sec
= 1 m/sec.
Converting m/sec to km/hr =1 x(18/5) km/hr
= 3.6 km/hr. | aqua_rat |
Magma pours out a volcano and what off a cliff | [
"drips",
"suspends",
"freezes",
"sticks"
] | A | As magma flows out of a volcano and descends a cliff, it typically takes on a liquid form and can drip or flow due to gravity, similar to how lava behaves when it erupts. | openbookqa |
The way of learning that involves reward and punishment is called? | [
"pressure",
"foolish",
"conditioning",
"mixed"
] | C | Conditioning is a way of learning that involves a reward or punishment. If you ever trained a dog to obey a command, you probably gave the dog a tasty treat each time he performed the desired behavior. It may not have been very long before the dog would reliably follow the command in order to get the treat. This is an example of conditioning that involves a reward. | sciq |
A man can row downstream at the rate of 10 Km/hr and upstream at 6 Km/hr. Find man's rate in still water and the rate of current? | [
"8,2",
"6,6",
"None of these",
"9,3"
] | A | Rate of still water = 1/2 (10 + 6) = 8 Km/hr
Rate of current = 1/2 (10-6) = 2 Km/hr | aqua_rat |
Drug not used in SIADH is: | [
"Restriction of free water intake",
"Desmopressin",
"3% NaCl",
"Demeclocycline"
] | B | Desmopressin is ADH and will exacerbates the symptoms of SIADH. Hypeonic saline (3%NaCl) is used for severely symptomatic patients with hyponatremia. Demeclocycline decreases the release of ADH. | medmcqa |
here's an easy question of averages, but let's try to see innovative ways of solving this.
A class has 12 boys and x girls. Average score of boys and girls is 81 and 92 respectively. the average of the whole class is 86, what is the value of x? | [
"e) 12",
"b) 7",
"c) 8",
"d) 10"
] | D | 12(81)+92x/12+x=86
972+92x/12+x=86
972+92x=86(12+x)
972+92x=1032+86x
X's one side, numbers one side we get,
92x - 86x=1032-972
6x=60
hence, x=10 | aqua_rat |
Find the fourth proportional to 0.5, 1.12 and 1.3? | [
"2.192",
"2.912",
"2.914",
"2.81"
] | B | Formula = Fourth proportional = (b × c)/a
A = 0.5 , B = 1.12 and C = 1.3
(1.12 × 1.3)/0.5
1.456/0.5 = 2.912 | aqua_rat |
Cholera vaccination is indicated - | [
"In Neonates",
"To control epidemics",
"In endemic areas",
"For travellers"
] | C | in endemic areas o Cholera vaccination should be considered in areas where cholera is endemic.o However, it should always be done in conjunction with implementation of safe water, sanitation and hygiene promotion programme.o In resource poor areas, vaccination should be targeted at children aged > 2 years.o Cholera vaccine has not been recommended in outbreak/epidemic settings or complex humanitarian emergencies because of the logistical challanges of administering 2-dose vaccine, and concern that long-scale vaccination would divert limited resources from higher priority measures,o As it does not prevent epidemic cholera transmission, it is not recommended for general population,o Cholera transmission is not recommended for travelers, as counseling about risk avoidance is more cost effective than vaccination. | medmcqa |
A three digit number divisible by 7 becomes divisible by 3 when 16 is subtracted from it. The largest such number is : | [
"942",
"994",
"981",
"963"
] | B | Out of all the 5 options, only 994 is NOT divisible by 3. All others are divisible
So Answer = A (No further calculation required)
Addition of any two non-divisible numbers by 3 gives the resultant divisible by 3
16 is non-divisible by 3; we are subtracting a number from that so that the resultant becomes divisible by 3
Applying the above rule,It means that the number which we are going to add should be non-divisible by 3
So comes the answer = 994 | aqua_rat |
A man can row 7 ½ kmph in still water.if in a river running at 1.5 km/hr an hour,it takes him 50 minutes to row to a place and back,how far off is the place? | [
"4 km",
"3 km",
"2 km",
"1 km"
] | B | Speed downstream =(7.5+1.5)km/hr=9 km/hr;
Speed upstream=(7.5-1.5)kmph=6kmph.
Let the required distance be x km.then,
x/9+x/6=50/60.
2x+3x=(5/6*18)
5x=15
x=3.
Hence,the required distance is 3km. | aqua_rat |
The banker's discount on a sum of money for 1 1/2 years is Rs. 558 and the true discount on the same sum for 2 years is Rs. 600. The rate percent is: | [
"12%",
"10%",
"13%",
"11%"
] | A | B.D. for 3/2 years = Rs. 558.
B.D. for 2 years
= Rs.(558 x 2/3 x 2)
= Rs. 744
T.D. for 2 years = Rs. 600.
Therefore, Sum = B.D. x T.D./B.D. - T.D
= Rs. (744 x 600/144 )= Rs. 3100.
Thus, Rs. 744 is S.I. on Rs. 3100 for 2 years.
Therefore, Rate =(100 x 744/3100 x 2)%
= 12% | aqua_rat |
Rahul's Mathematics test had 75 problems, 10 arithmetic, 30 algebra, 35 geometry problems.
Although he answered 70% of arithmetic, 40% of arithmetic and 60% of geometry problems correctly,
still he got less than 72% problems right. How many more questions he would have to answer more to get
passed | [
"5",
"14",
"7",
"9"
] | B | Number of questions attempted correctly = (70% of 10 + 40% of 30 + 60% of 35)
= 7 + 12 + 21 = 40.
Questions to be answered correctly for 72% = 72% of total quations
= 72 % of 75 = 45.
He would have to answer 54 - 40 = 14 | aqua_rat |
A basketball team scored x points per game in its first n games of the season, and in all the following games it scored an average (arithmetic mean) of y points per game. What was the average number of points per game in its first n + 4 games? | [
"x + 3y/(n + 3)",
"(x + 3y)/(n + 3)",
"(3x + ny)/(n + 3)",
"(nx + 3y)/(n + 4)"
] | D | Total points in first n games = nx
Total marks in next 3 games is 3y
So, Average marks in n + 4 games = (nx+3y)/(n+4) | aqua_rat |
Four brothers Adam, Bill, Charles and David together contributed certain amount of money and purchased a car. The contribution made by Adam is half that of the total contribution made by the other three brothers, contribution made by Bill is one-fourth of the total contribution made by the other three brothers and the contribution made by Charles is two-third of the total contribution made by the other three brothers. If the total price of the car is $9000, find the contribution made by David. | [
"$540",
"$600",
"$680",
"$660"
] | B | Given that A:(B+C+D)= 1:2.
Hence A contributed 1/3rd of the total price.
Given B:(A+C+D)=1:4
Hence B contributed 1/5th of the total price.
Given C:(A+B+D)=2:3
Hence C contributed 2/5th of the total price.
Thus the contribution made by A,B and C= 1/3+1/5+2/5=14/15
So, the remaining 1/15th of the price is contributed by David.
Hence David's contribution= 1/15×9000=$600. | aqua_rat |
Maximum lengthening is obtained if the angle of Z plasty is ? | [
"60 degrees",
"30 degrees",
"45 degrees",
"90 degrees"
] | D | larger angle provides more lengthening but is difficult to close due to skin tension | medmcqa |
Which of the following is divisible by the first six positive integer multiples of 19?
(i) 52440
(ii) 114600
(iii) 19038 | [
"i and ii only",
"None",
"i only",
"ii and iii only"
] | C | A positive integer x is divisible by 19, 2*19,...,6*19 if and only if it is divisible by their least common multiple, which in this case is 3*4*5*19. In particular, x is divisible by 10, so iii is not divisible by the first six positive integer multiples of 19.
3*4*5*19=60*(20-1)=1140. 1140*100=114000, so clearly (ii) is not divisible by the first six positive integer multiples of 19.
It remains to verify (i). 52440-40*1140=52440-45600=6840=6*1140, so (i) is divisible by 1140. | aqua_rat |
Two employees M and N are paid a total of $594 per week by their employer. If M is paid 120 percent of the salary paid to N, how much is N paid per week? | [
"$260",
"$280",
"$250",
"$270"
] | D | 1.2N + N = 594
2.2N = 594
N = 270 | aqua_rat |
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 7 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait? | [
"12",
"36",
"72",
"24"
] | D | the difference of the speed is 2m per second so in one minute Sacha will be 120 m ahead of Bruno..
Bruno will cover this in 120/5=24 secs.. | aqua_rat |
Which of the following is primordial prevention - | [
"Chemoprophylaxis",
"Avoiding nicotine",
"Vaccination",
"Screening"
] | B | Level of prevention Examples o Primordial prevention o Discouragement from adapting a harmful lifestyle, e.g. smoking o Primary prevention o Immunization (vaccination) o Chemoprophylaxis o Nutritional supplementation programmes o Chlorination of water o Using a mosquito net o Health education o Secondary prevention o Screening test o Case finding programmes o Early diagnosis & treatment o Tertiary prevention o Disability limitation # Resting the affected limb in neutral position in PRPP to prevent deformity o Rehabilitation # Estabilishing schools for blind # Provision of aids for crippled # Reconstructive surgery in leprosy # Muscle re-education and graded exercise in neurological disorder like polio # Changing profession for a more suitable one | medmcqa |
A,B,C can complete a piece of work in 16,6,12 days. Working together, they complete the same work in how many days? | [
"48/15",
"10",
"2",
"7/9"
] | A | A+B+C 1day work = 1/16 + 1/6 + 1/12 = 15/48
A,B,C together will complete the job in 48/15 days | aqua_rat |
A boat having a length 5 m and breadth 2 m is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is: | [
"96 kg",
"None of these",
"60 kg",
"100 kg"
] | D | Volume of water displaced = (5 x 2 x 0.01) m3
= 0.10 m3.
∴ Mass of man = Volume of Water displaced x Density of water
= (0.10 x 1000)kg
= 100 kg. | aqua_rat |
A tradesman by means of his false balance defrauds to the extent of 32%? in buying goods as well as by selling the goods. What percent does he gain on his outlay? | [
"64%",
"78%",
"94%",
"74%"
] | D | g% = 32 + 32 + (32*32)/100
= 74% | aqua_rat |
A 4-year-old girl presented with urinary infection with E.coli, pus cells in urine, dilatation of left ureter with hydroureter ; micturating cysto-urethrogram shows a filling defect in the bladder. What is the likely diagnosis? | [
"VUR",
"Sacrococcygeal teratoma",
"P.U.V",
"Ureterocele"
] | D | A ureterocele is a cystic dilatation of the terminal ureter and is obstructive because of a pinpoint ureteral orifice. Ureteroceles are much more common in girls than in boys. In girls, ureteroceles are almost always associated with ureteral duplication, whereas in 50% of affected boys there is only one ureter. Ultrasonography is effective in demonstrating the ureterocele and whether the associated obstructed system is duplicated or single. VCUG usually shows a filling defect in the bladder, sometimes large, corresponding to the ureterocele, and often shows reflux into the adjacent lower pole collecting system with typical findings of a "drooping lily" appearance to the kidney. Nuclear renal scintigraphy is most accurate in demonstrating whether the affected renal moiety has significant function. | medmcqa |
Peter’s salary is reduced by 30% and then reduced salary is increased by 30%. Find ,how many percentage his present salary is less as compared to his previous salary? | [
"8%",
"6%",
"9%",
"7%"
] | C | 30*30
-------- = 9%
100 | aqua_rat |
What is the principal sum?
I. The sum amounts to Rs. 780 at a rate of 8% p.a. at S.I.
II. The sum amounts to Rs. 1000 in 5 years at S.I.
III. The rate of interest is 8% p.a. | [
"None of these",
"I and II only",
"II and III only",
"I and III only"
] | C | Clearly, Only the statement II and III is needed and cant be able to find by using I statement | aqua_rat |
Which veins return oxygen-rich blood from the lungs to the heart? | [
"jugular",
"respiratory",
"varicose",
"pulmonary"
] | D | Today in many countries, death rates have gone down but birth rates remain high. This means that the population is growing. Figure below shows the growth rates of human populations all over the world. | sciq |
When describing motion, what factor is just as important as distance? | [
"pressure",
"direction",
"velocity",
"momentum"
] | B | Direction is just as important as distance in describing motion. For example, if Mia told a friend how to reach the post office from her house, she couldn’t just say, "go 3 kilometers. " The friend might end up at the park instead of the post office. Mia would have to be more specific. She could say, "go west for 2 kilometers and then go north for 1 kilometer. " When both distance and direction are considered, motion is a vector. A vector is a quantity that includes both size and direction. A vector is represented by an arrow. The length of the arrow represents distance. The way the arrow points shows direction. The red arrows in Figure above are vectors for Mia’s route to the school and post office. If you want to learn more about vectors, watch the videos at these URLs:. | sciq |
A survey of employers found that during 1993 employment costs rose 3.5 percent, where employment costs consist of salary costs and fringe-benefit costs. If salary costs rose 3 percent and fringe-benefit costs rose 7.5 percent during 1993, then fringe-benefit costs represented what percent of employment costs at the beginning of 1993 ? | [
"16.5%",
"35%",
"10%",
"55%"
] | C | The amount by which employment costs rose is equal to 0.035(salary costs + fringe benefit costs);
On the other hand the amount by which employment costs rose is equal to 0.03*salary costs + 0.075*fringe benefit costs;
So, 35(S+F) = 30S+75F --> S = 9F --> F/S = 1/9 --> F/(S+F) = 1/(1+9) = 1/10 = 0.1. | aqua_rat |
The removal of trees may cause damage to ecosystems such as | [
"cities",
"jungles",
"fields",
"oceans"
] | B | Deforestation in jungles disrupts biodiversity, alters habitats, and can lead to soil erosion, negatively impacting the entire ecosystem and the species that depend on it. | openbookqa |
ECG changer in digitalis toxicity are A/E ? | [
"ST depression in proximal pa",
"Diminished T wave amplitude",
"T wave inversion",
"Conduction block"
] | B | Diminished T wave amplitude All the given ECG changes can be produced by digitalis. o But, examinar has asked specifically about the ECG changes in digitalis toxicity (not at therapeutic concentration) Diminished T wave amplitude occurs at therapeutic concentration, in toxicity T wave becomes inveed. o There are some characteristic ECG changes by digitalis use, some of which occur at therapeutic concentration and some occurs at toxic leve. 1. At therapeutic level o Prolongation of PR interval Scooping of ST segment --> Also known as digitalis wave or dig sag there is down sloping ST depression (initially) Shoening of QT interval o Decreased T wave amplitude/or T wave inversion 2. At toxic level: Above changes are amplified o Prolongation of PR interval -p conduction block may occur o T wave inversion ST depression o QT interval shoens fuher o Increased automaticity --> Arrhythmias | medmcqa |
Muscle of tongue are supplied by - | [
"Hypoglossal",
"Chorda tympani",
"Lingual nerve",
"Glosso pharyngeal nerve"
] | A | All muscles of tongue are supplied by hypoglossal nerve except palatoglossus which is supplied by cranial part of accessory nerve through pharyngeal plexus. | medmcqa |
If x and y are positive integers such that x/y = 2.18, which of the following numbers could be y? | [
"100",
"150",
"2",
"50"
] | D | With the given information, we are trying to find the value of y.
To achieve this we must convert the given decimal to a fraction and reduce it to it's lowest integer form.
Take the decimal x/y = 2.18 and because it's in the hundreds decimal place, put the given value (x/y = 2.18/1) and multiply it by 100.
Take the resulting fraction (x/y = 218/100) and reduce it to it's lowest form.
Both of the numbers are divisible by 2.
The result is x/y = 109/50.
Thus y = 50. | aqua_rat |
In how many ways can live men and three women sit in a row such that all men sit together? | [
"1340",
"2880",
"1400",
"1230"
] | B | Treat all boys as one unit. Now there are four students and they can be arranged in 4! ways. Again five boys can be arranged among themselves in 5! ways.
Required number of arrangements
4! * 5! = 24 * 120 = 2880 | aqua_rat |
In performing a tracheostomy, authorities agree that | [
"The thyroid isthmus should be preserved",
"The trachea should be entered at the second or third cartilaginous ring",
"The strap muscles should be divided",
"Only horizontal incisions should be used"
] | B | Although tracheostomy is occasionally an emergency procedure, it can be more effectively performed in an operating room where hemostasis and antisepsis are readily achieved. Most authorities recommend a horizontal incision; however, limited direct midline incisions have the advantage of not opening any unnecessary tissue planes and perhaps reducing the incidence of bleeding complications. Both approaches have advocates. In either case, the skin incision is made just below the cricoid cartilage, the strap muscles are spared and retracted, the thyroid isthmus is divided if necessary, and the trachea is entered at the second tracheal ring. The second and third tracheal rings are incised vertically, allowing placement of the tracheostomy tube. The first tracheal ring and the cricoid cartilage must be left intact. | medmcqa |
A library has an average of 540 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is: | [
"None",
"300",
"290",
"276"
] | C | Since the month begins with sunday,to there will be five sundays in the month
Average required = (540x5 + 240x25) /30) = 290 | aqua_rat |
The speed of a boat in upstream is 60 kmph and the speed of the boat downstream is 100 kmph. Find the speed of the boat in still water and the speed of the stream? | [
"35, 27 kmph",
"50, 60 kmph",
"80, 20 kmph",
"45, 65 kmph"
] | C | Speed of the boat in still water = (60+100)/2 = 80 kmph. Speed of the stream = (100-60)/2 = 20 kmph | aqua_rat |
A coin is tossed 4 times. What is the probability of getting exactly 3 heads? | [
"1/16",
"1/2",
"3/16",
"1/4"
] | D | The number of possible outcomes is 2^4 = 16
There are 4 ways to get exactly 3 heads.
P(exactly 3 heads) = 4/16 = 1/4 | aqua_rat |
What happens when hexane's temperature goes above 70 degrees celsius? | [
"It melts",
"it sublimates",
"it boils",
"It freezes"
] | C | When hexane's temperature goes above 70 degrees Celsius, it boils, as hexane has a boiling point of approximately 68.7 degrees Celsius, and exceeding this temperature causes it to change from a liquid to a gas. | openbookqa |
It is dark in my bedroom and I want to get two socks of the same color from my drawer, which contains 24 red and 24 blue socks. How many socks do I have to take from the drawer to gate at least two socks of the same color? | [
"26",
"48",
"2",
"3"
] | D | let
if first is red
and by luck if 2nd is not red then we u hav to take 3rd one.
which will be either red or blue.
but u will get 2 socks of same color,either red or blue. | aqua_rat |
In 1990 a total of p earthquakes occurred worldwide, some but not all of which occurred in Asia. If r of these earthquakes occurred in Asia, which of the following represents the ratio of the number of earthquakes that occurred in Asia to the number that did NOT occur in Asia? | [
"r/p",
"p/(p-r)",
"p/r",
"r/(p-r)"
] | D | We're given a couple of facts to work with:
1) There were a total of p earthquakes
2) Of those earthquakes, r of them occurred in Asia
We're asked for the ratio of the number of earthquakes that occurred IN ASIA to the number of earthquakes that DID NOT occur in Asia.
Let's TEST VALUES
p = 5 total earthquakes
r = 2 occurred in Asia
Thus, there were 3 earthquakes that DID NOT occur in Asia....
The answer to the question is 2:3
We just need to plug in the values for p and r and find the match...
Answer A: p/r = 5/2 NOT a match
Answer B: r/p = 2/5 NOT a match
Answer C: r/(p-r) = 2/(5-2) = 2/3 This IS a match
Answer D: p/(p-r) = 5/(5-2) = 5/3 NOT a match
Answer E: 1 - (r/p) = 1-2/5 = 3/5 NOT a match | aqua_rat |
The ratio of efficiency of A is to C is 5:3.The ratio of no.of days taken by B is to C is 2:3.A takes 6 days less than C,when A and C completes the work individually.B and C left the work after 2 days.the no of days taken by A to finish the remaining work? | [
"6",
"8",
"5",
"7"
] | A | A : B : C
Efficiency 10 : 9 : 6
No of days 9x : 10x : 15x
given=> 15x-9x = 6
hence, x = 1
Number of days taken by A = 9 and daily work done=10
Number of days taken by B= 10 and daily work done=9 (total work =90)
Number of days taken by C = 15 and daily work done=6
work done by B and C in initial 2 days =30
rest work =60
Number of days required by A to finish = 60/10=6 days | aqua_rat |
How many prime numbers are between 13/3 and 83/6? | [
"3",
"4",
"2",
"1"
] | C | 13/3 = 4.xxx
83/6 = 13.xxx
So we need to find Prime numbers between 4 (Exclusive) - 12 (Inclusive)
There are 2 Prime numbers 7 11
Hence answer will be (B) 2 | aqua_rat |
An article costing rs.160 is sold at 15% discount on a mark-up price. What is the selling price after
discount? | [
"106",
"116",
"136",
"146"
] | C | Rs. 136
160-(160*15/100)=160*85/100=136 | aqua_rat |
Look at this series: 36, 34, 30, 28, 24, ... What number should come next? | [
"30",
"24",
"20",
"22"
] | D | alternating no subtraction series first 2 is subtracted and then 4 and 2 so on
22 is the next one | aqua_rat |
3 ltr of water is added with 11 ltr of a solution containing 42%of alcohol in the water. The %of alcohol in the new mixture is? | [
"45%",
"35%",
"23%",
"33%"
] | D | We have a 11 litre solution containing 42% of alcohol in the water.
=> Quantity of alcohol in the solution
=11×42/ 100
Now 3 litre of water is added to the solution.
=> Total quantity of the new solution = 11 + 3 = 14
Percentage of alcohol in the new solution
=11×42/100
14
×
100
=11×4210014×100
=11×3/100
=33% | aqua_rat |
10 books are placed at random in a shelf. The probability that a pair of books will always be together is? | [
"1/9",
"1/5",
"1/7",
"1/8"
] | B | 10 books can be rearranged in 10! ways consider the two books taken as a pair then number of favourable ways of getting these two books together is 9! 2!
Required probability = 1/5 | aqua_rat |
Set A consists of all the prime numbers between 12 and 32. What is the range of set A? | [
"18",
"17",
"16.6",
"23"
] | A | The range of a set of data is the difference between the highest and lowest values in the set
In this set,
Highest number = 31
Lowest number = 13
Range = Highest - Lowest = 31 - 13 = 18 | aqua_rat |
A clock loses two minutes every three hours for 4 days and gains 1% in the subsequent 6 days. If it was set right on Friday at 11 AM, what will be the time at the end of 10 days? | [
"11:22:24 AM",
"11:54:40 AM",
"12:16:40 PM",
"12:06:36 PM"
] | A | Clock loses: 2 minute in 3 hours = 16 minutes in 24 hours = 64 minutes in 4 days.
Clock gains: 1% in the subsequent 6 days = 1% in 6*24*60 minutes = 86.40 minute in 6 days;
Net gain in 10 days = 86.40 - 64 = 22.4 minutes.
11AM + 22.4 minutes = 11:22 and 4/10th of a minute or 24 seconds. | aqua_rat |
Protein not synthesized in liver:- | [
"Immunoglobulins",
"Albumin",
"Plasma enzymes",
"Acute phase proteins"
] | A | Immunoglobulins - are synthesized from plasma cell. Other all plasma protein are synthesized from liver They are glycoproteins Consist of two identical heavy (H) Chains and two identical light (L) chains Is a Y-shaped tetramer (H2L2) Humans have five classes of immunoglobulins-namely IgG, IgA, IgM, IgD and IgE-containing the heavy chains U, a, u, 6 and e, respectively. | medmcqa |
What type of organism has spores that are spread by water and wind? | [
"fungi",
"Trees",
"Plants",
"yeast"
] | A | Spores may be dispersed by moving water, wind, or other organisms. Some fungi even have “cannons” that “shoot” the spores far from the parent organism. This helps to ensure that the offspring will not have to compete with the parents for space or other resources. You are probably familiar with puffballs, like the one in Figure below . They release a cloud of spores when knocked or stepped on. Wherever the spores happen to land, they do not germinate until conditions are favorable for growth. Then they develop into new hyphae. | sciq |
If W is the set of all the integers between 19 and 99, inclusive, that are either multiples of 3 or multiples of 2 or multiples of both, then W contains how many numbers? | [
"34",
"32",
"26",
"54"
] | D | Multiples of 2 from 19 to 99=Multiples of 2 from 1 to 99-Multiples of 2 from 1 to 18=[99/2]-[18/2]=49-9=40
Multiples of 3 from 19 to 99=Multiples of 3 from 1 to 99-Multiples of 3 from 1 to 18=[99/3]-[18/3]=33-6=27
Multiples of2 and 3 bothi.e.6 from 19 to 99=Multiples of 6 from 1 to 99-Multiples of 6 from 1 to 18=[99/6]-[18/6]=16-3=13
These 8 Numbers have been counted twice in both the above calculation while calculating multiples of 2 and 3
i.e. Total Numbers in W = 40 + 27 -13 = 54 | aqua_rat |
Enophthalmos is an uncommon feature of Horner's syndrome. Enophthalmos is due to palsy of? | [
"Superior tarsal muscle",
"Inferior tarsal muscle",
"Levator palpebrae superioris",
"Orbitalis muscle"
] | D | Enophthalmos (sinking of the eye) is the inward displacement of the eyeball. It results from paralysis of the orbitalis muscle (a smooth muscle that spans the inferior orbital fissure and may contribute to maintaining the normal position of the eyeball). | medmcqa |
The sun is | [
"Square shaped",
"caused by wind",
"Cold",
"has nuclear mechanics"
] | D | The sun generates energy through nuclear fusion, where hydrogen atoms combine to form helium, releasing vast amounts of energy in the process. This nuclear reaction is the fundamental mechanism that powers the sun and produces its heat and light. | openbookqa |
Ovulation is the release of an egg from the what? | [
"fallopian tubes",
"vagina",
"ovary",
"cervix"
] | C | Ovulation, the release of an egg from the ovary, occurs at about the midpoint of the cycle. This would be around day 14 of a 28 day cycle. The egg is swept into the fallopian tube. If sperm is present, fertilization may occur. As sperm can only survive in the fallopian tube for up to a few days, fertilization can only occur within those few days post-ovulation. | sciq |
If six coins are flipped simultaneously, the probability of getting at least one heads and at least one tails is closest to | [
"97%",
"75%",
"94%",
"6%"
] | A | Probability of getting no heads = 1/64
Probability of getting at least 1 head = 63/64
Probability of getting no tails = 1/64
Probability of getting at least 1 tail = 63/64
Probability of getting at least 1 head and at least 1 tail = 63*63/64*64 | aqua_rat |
Surekha started a business investing Rs.25,000 in 1999. In 2000, he invested an additional amount of Rs. 10,000 and Rajesh joined him with an amount of Rs. 35,000. In 2001, Surekha invested another additional amount of Rs.10,000 and Jay joined them with an amount of Rs.35,000. What will be Rajesh's share in the profit of Rs.1,80,000 earned at the end of 3 years from the start of the business in 1999? | [
"Rs 45000",
"None",
"Rs 70000",
"Rs 60000"
] | D | Surekha:Rajesh:Jay= (25000×12+35000×12+45000×12):(35000×24) : (35000×12) = 1260000 : 840000 : 420000 = 3 : 2 : 1. Rajesh's share =Rs.(180000×2/6) = Rs.60000. | aqua_rat |
Which of the following drugs should not be administered concomitantly with warfarin as it decreases the effect of oral anticoagulants? | [
"Broad spectrum antibiotic",
"Cimetidine",
"Aspirin",
"Oral contraceptive"
] | D | Estrogen increases the synthesis of various clotting factors and produce a hypercoagulable state. Thus OCP containing estrogen decrease the effectiveness of warfarin and other oral anticoagulants. | medmcqa |
Which of the following condition is an indication for Chrysotherapy? | [
"Rheumatoid ahritis",
"Behcet's syndrome",
"Osteoahritis",
"Ankylosing spondylitis"
] | A | Chrysotherapy refers to the treatment of rheumatoid ahritis with gold based drugs. Toxicities associated with its use are skin rash, bone marrow supression and proteinuria. Drugs included under the conventional DMARD group of medications are methotrexate, sulfsalazine, gold, antimalarials, leflunomide, azathioprine, penicillamine and minocycline. | medmcqa |
Muscle, which pulls the disk of TMJ downward: | [
"Digastric",
"Medial pterygoid",
"Mylohyoid",
"Lateral pterygoid"
] | D | Lateral pterygoid is the only muscle of mastication, which is inserted into anterior margin of articular disc and capsule of TMJ by lower head and to pterygoid fovea of neck of mandible, by superior head.
It pulls the disk of TMJ downwards, depressing the mandible. | medmcqa |
Mr. Yutaro’s class contains 10 boys and 6 girls. If two students are chosen, one at a time, from the class, what is the probability that a boy and a girl are chosen? | [
"9/20",
"11/24",
"1/2",
"9/48"
] | C | Probability of a girl being chosen first, then a girl:
6/16 * 10/15
Probability of a boy being chosen first, then a boy:
10/16 * 6/15
Probability of a boy and a girl being chosen:
(6*10+6*10) / (15*16)
=1/2 | aqua_rat |
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