RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: If Rahul finds that he is 12th from the right in a line of boys and 4th from the left, how many boys should be added to the line such that there are 28 boys in the line?
A.12
B.14
C.20
D.13
Answer: D.13
Explanation: total no of boys=l+r-1=12+4-1=15
we required 28 boys so we have to add 13 to make it 28.
so 13 is answer
ANSWER:D
Question: S is the set of all fractions defined by the formula n/(n + 1), where n is a positive integer less than 20. What is the product D of all the fractions that are in S?
A.1) 1/20
B.2) 1/21
C.3) 1/2
D.4) 19/40
Answer: A.1) 1/20
Explanation: 1/2 * 2/3 * 3/4 * ... 19/20
= 1/20
Answer - A
Question: A watch was sold at a loss of 12%. If it was sold for Rs.140 more, there would have been a gain of 4%. What is the cost price?
A.s.1000
B.s.875
C.s.1007
D.s.1006
Answer: B.s.875
Explanation: Explanation:
88%
104%
--------
16% ---- 140
100% ---- ? => Rs.875
Answer:B
Question: If a = -0.7, which of the following is true?
A.a < a^2 < a^3
B.a^2 < a < a^3
C.a < a^3 < a^2
D.a^3 < a < a^2
Answer: C.a < a^3 < a^2
Explanation: a=-0.7;
a^2=0.49;
a^3=-0.343;
Answer : C
Question: A fair coin is tossed repeatedly. If heads appears on first 4 tosses what is the probability that tail appears on the next two tosses?
A.1/6
B.1/5
C.1/3
D.1/4
Answer: D.1/4
Explanation: Explanation :
Like mentioned in the question, the coin is fair. So chance of appearing of head and tail on each toss is same and each toss is independent from the previous one. So the chance of appearing tail on the next two tosses is still 1/2 each.
1/2 * 1/2 = 1/4
Answer : D
Question: A, B, C together started a business. A invested Rs.6000 for 5 months B invested Rs.3600 for 6 months and C Rs.7500 for 3 months. If they get a total profit of Rs.7410. Find the share of B?
A.2160
B.3000
C.3018
D.3019
Answer: A.2160
Explanation: 60*5:36*6:75*3
100: 72: 75
72/247 * 7410 = 2160
Answer: A
Question: Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?
A.23 m
B.23	2/9 m
C.27	7/9m
D.29 m
Answer: C.27	7/9m
Explanation: Explanation:
Relative speed = (40 - 20) km/hr =	(	20 x	5/18	)	m/sec =	(	50/9	)	m/sec.
Therefore Length of faster train =	(	50/9	x 5	)	m =	250/9	m = 27	7/9	m.
ANSWER IS C
Question: If integers e and b are distinct factors of 30, which of the following CANNOT be a factor of 30?
I. eb + b^2
II. (e + b)^2
III. e + b
A.I only
B.II only
C.III only
D.I and II only
Answer: B.II only
Explanation: Factors of 30 are: 1, 2, 3, 5, 6, 10, 15, and 30.
I. eb + b^2 --> if e=1 and b=2 then eb + b^2=6, which is a factor of 30. OK;
II. (e + b)^2 --> (e + b)^2 is a perfect square, no perfect square (but 1) is a factor of 30. DISCARD;
III. e + b --> if e=1 and b=2 then e + b=3, which is a factor of 30. OK.
Answer: B.
Question: Two buses and a van were employed to transport a class of students on a field trip. 4/5 of the class boarded the first bus. 2/3 of the remaining students boarded the second bus, and the rest of the students boarded the van. When the second bus broke down, 1/2 of the students on the second bus boarded the first bus. What fraction of the class was on board the first bus?
A.a) 1/2
B.b) 26/30
C.c) 11/15
D.d) 23/30
Answer: B.b) 26/30
Explanation: This is a pure ratio question (we aren't given any numbers for anything), so you can just choose any starting number you like, and use it to solve the problem. The best number to pick is almost always the product of all the denominators of your fractions, so here we could start with 30 students. Then we have:
• 4/5 of these, or 24 students, board the first bus
• there are 6 students left. 2/3 of these, or 4 students, board the second bus
• this bus breaks down, and 1/2 of the 4 students, or 2 students, board the first bus
• the first bus now contains 26 out of the original 30 students, so the answer is 26/30
Answer B
Question: 20 % of 2 is equal to
A.0.2
B.0.4
C.0.6
D.0.7
Answer: B.0.4
Explanation: 20 % of 2 = (20 / 100) * 2 = 0.4
Answer: Option B
Question: If |x| = |y| and xy < 0, which of the following must be true?
A.x+y =-2
B.x+y =-1
C.x+y =0
D.x+y =1
Answer: C.x+y =0
Explanation: 1. x and y have same magnitude, |x| = |y|
2. They have opposite signs xy<0
Implies x = -y or y = -x
So C: x+y =0
Answer C
Question: A certain quantity of 40% solution is replaced with 25% solution such that the new concentration is 35%. What is the fraction of the solution that was replaced?
A.1/4
B.1/3
C.1/2
D.2/3
Answer: B.1/3
Explanation: Original quantity = A
Substituted quantity = B
Then:
(A*0.4 + 0.25*B тАУ 0.4*B ) / A = 0.35
0.4 + (B/A)*(-0.15)=0.35
B/A=-0.05/-0.15=1/3
ANSWER:B
Question: A train 220 m long passed a pole in 22 sec. How long will it take to pass a platform 550 m long?
A.77
B.82
C.43
D.67
Answer: A.77
Explanation: Speed = 220/22 = 10 m/sec.
Required time = (220 + 550)/10 = 77 sec.
Answer: A
Question: There are 2 groups named brown and red. They can n't marry in the same group. If the husband or wife dies then the person will revert to their own group. If a person is married then the husband will have to change his group to his wife's group. Children will own the mother's group. If man is red then his mother's brother belong to which group if he is married
A.138
B.287
C.207
D.2768
Answer: B.287
Explanation: If a man is Red, his mother must be red, his mothers brother also red but after marriage, he gets converted to Brown.
Answer:B
Question: X does 80% of a work in 20 days. He then calls in Y and they together finish the remaining work in 3 days. How long Y alone would take to do the whole work?
A.37 1/2
B.35
C.36
D.25
Answer: A.37 1/2
Explanation: Whole work is done by X in ( 20 x 5/4) = 25 days.
Now, ( 1 - 4 /5) i.e., 1/5	work is done by X and Y in 3 days.
Whole work will be done by X and Y in (3 x 5) = 15 days.
A's 1 day's work = 1 , (X + Y)'s 1 day's work = 1 .
25 15
Therefore Y's 1 day's work = ( 1/15	- 1 /25	) = 4/150 = 2/75
So, Y alone would do the work in 75/2	= 37 1/2 days.
Question: Two men started from the same place walk at the rate of 10kmph and 12kmph respectively. What time will they take to be 10 km apart, if they walk in the same direction?
A.5hours
B.6hours
C.8hours
D.10hours
Answer: A.5hours
Explanation: To be 2km apart they take 1 hour
To be 10km apart they take = 1/2 * 10 =5 hours
Answer is A
Question: In a college, the ratio of the number of boys to girls is 8 : 5. If there are 400 girls, the total number of students in the college is
A.1040
B.920
C.980
D.720
Answer: A.1040
Explanation: Explanation:
Let the boy are 8x and Girls are 5x
=> 5x = 400
=> x = 80
Total students = 8x+5x = 13x = 13(80) = 1040
Option A
Question: A collector collects stamps from foreign countries. In June, she gave 20 percent of her stamps to her friend. In July, she gave 30 percent of her remaining stamps to another friend. If these were the only changes in the number of stamps in the stamp collection during those two months, what percent of her collection at the beginning of June did she give to away in June and July?
A.32%
B.36%
C.40%
D.44%
Answer: D.44%
Explanation: Let x be the number of stamps in the original collection.
The percentage of the collection given away is:
0.2x + 0.3(0.8x) = 0.2x + 0.24x = 0.44x = 44%
The answer is D.
Question: What is the number?
I.
The sum of the two digits is 8. The ratio of the two digits is 1 : 3.
II.
The product of the two digit of a number is 12. The quotient of two digits is 3.
A.I alone sufficient while II alone not sufficient to answer
B.II alone sufficient while I alone not sufficient to answer
C.Either I or II alone sufficient to answer
D.Both I and II are not sufficient to answer
Answer: C.Either I or II alone sufficient to answer
Explanation: Let the tens and units digit be x and y respectively. Then,
I. x + y = 8 and	x/y	=	1/3
I gives, 4y = 24 y = 6.
So, x + 6 = 8 x = 2.
II. xy = 12 and	x/y	=	3/1
II gives, x^2 = 36 x = 6.
So, 3y = 6 y = 2.
Therefore, Either I or II alone sufficient to answer.
Option C
Question: A mixture of 70 litres of milk and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12 1/2% water?
A.2 litres
B.6 litres
C.8 litres
D.3 litres
Answer: A.2 litres
Explanation: Quantity of milk in the mixture = 90/100 (70) = 63 litres.
After adding water, milk would form 87 1/2% of the mixture.
Hence, if quantity of mixture after adding x liters of water, (87 1/2) / 100 x = 63 => x = 72
Hence 72 - 70 = 2 litres of water must be added.
Answer: A
Question: A number is said to be prime saturated if the product of all the different positive prime factors of d is less than the square root of d. What is the greatest two digit prime saturated integer ?
A.99
B.98
C.97
D.96
Answer: D.96
Explanation: Clearly D A number is said to be prime saturated if the product of all the different positive prime factors of d is less than the square root of d.
96 has more number of smaller prime factor thats the clue !!=D
Question: At Company X, senior sales representatives visit the home office once every 18 days, and junior sales representatives visit the home office once every 12 days. The number of visits that a junior sales representative makes in a 2-year period is approximately what percent greater than the number of visits that a senior representative makes in the same period?
A.10%
B.25%
C.33%
D.50%
Answer: D.50%
Explanation: Each 36-day period, senior representatives visit the home office 2 times while junior representatives visit 3 times, thus 50% more.
The answer is D.
Question: If the length of a rectangular field is 30 metres more than its breadth and the perimeter of the field is 540 metres, what is the area of the field in square metres?
A.18000
B.40000
C.31000
D.19000
Answer: A.18000
Explanation: Let breadth is x then length is 30+x
Now the perimeter=2(x+30+x)=540
solving this we get x=120
Now the area is 120*150=18000
ANSWER:A
Question: The length of a rectangular floor is more than its breadth by 200%. If Rs.400 is required to paint the floor at the rate of Rs.3/sq m, what would be the length of the floor?
A.12
B.18
C.20
D.22
Answer: C.20
Explanation: Let the length and the breadth of the floor be l m and b m respectively.
l = b + 200% of b = l + 2b = 3b
Area of the floor = 400/3 = 133.33 sq m
l b = 133.33 i.e., l * l/3 = 133.33
l^2 = 400> l = 20.
C
Question: In a certain game, a large container is filled with red, yellow, green, and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 3,087,000, how many red beads were removed?
A.1
B.2
C.3
D.4
Answer: C.3
Explanation: 3,087,000
= 2^3 * 5^3 * 3087
= 2^3 * 3 * 5^3 * 1029
= 2^3 * 3^2 * 5^3 * 343
= 2^3 * 3^2 * 5^3 * 7^3
The answer is C.
Question: Each of the squares above is to have exactly one letter and nothing else placed inside it. If 3 of the letters are to be the letter X, 2 of the letters are to be the letter Y, and 1 of the letters is to be the letter Z, in how many different arrangements can the squares have letters placed in them?
A.30
B.60
C.108
D.120
Answer: B.60
Explanation: take it as a alphabetical problem
XXXYYZ
since those are alphabets, they are identical....
so that's 6!/3!*2!*1! = 60
ANSWER:B
Question: If j and k are integers and j^2 / k is odd, which of the following must be true ?
A.j and k are both even
B.j = k
C.If j is even, k is even
D.j is divisible by k
Answer: C.If j is even, k is even
Explanation: Given: j and k are integers and j^2/k=odd--> j^2=k∗odd
(A) j and k are both even: not necessarily true, for example j=1 and k=1
(B) j = k: not necessarily true, for example j=3 and k=1;
(C) If j is even, k is even: as j^2=k∗odd then in order j to be even k must be even too, so this statement must be true;
(D) j is divisible by k: not necessarily true, for example j=3 and k=9;
(E) j^2 > k: not necessarily true, for example j=1 and k=1.Answer: C.
Answer: C.
Question: Based on this year's costs, an orcharde grower budgets P dollars for planing N new trees next year. If the average cost of planting each tree were to increase 15% from this year's cost, then the greatest number of trees that the orchard grower could plant next year using P dollars would be
A.13% less than N
B.25% less than N
C.equal to N
D.20% greater than N
Answer: A.13% less than N
Explanation: Correct answer is (A).
This year, the price of a tree is price1=P/N.
If this price increases by 15% it becomes price2=P/N*1.15
Then with P dollars, you can grow P/price2 tress i.e. P/(P/N*1.15) i.e. N/1.15 i.e. .87%
Question: If a survey shows that 60 citizens out of a sample of 200 support a particular Senate bill, what percent of the sample does not support the bill?
A.56%
B.70%
C.72%
D.82%
Answer: B.70%
Explanation: Those who support = 60.
% of those who don't support it is (200-60)/ 200 = 70%
Answer B
Question: A dishonest dealer professes to sell his goods at Cost Price but still gets 20% profit by using a false weight. What weight does he substitute for a kilogram?
A.833 1/6 grams
B.833 1/3 grams
C.873 1/3 grams
D.733 1/3 grams
Answer: B.833 1/3 grams
Explanation: If the cost price is Rs.100, then to get a profit of 20%, the selling price should be Rs.120.
If 120kg are to be sold, and the dealer gives only 100kg, to get a profit of 20%.
How many grams he has to give instead of one kilogram(1000 gm).
120 gm ------ 100 gm
1000 gm ------ ?
(1000 * 100)/120 = 2500/3 = 833 1/3 grams.
Answer: B
Question: A straight line in the xy- plane has y-intercept of 17 . If the slope is half its y-intercept, and the x-coordinate of the point in this line is 7, find the y-coordinate.
A.-100
B.34
C.76.5
D.75.6
Answer: C.76.5
Explanation: Eq of line = Y = MX +C
C= 17
M=C/2 = 17/2 =
X = 7
Substitute givens:
Y=(17/2*7) + 17 = 76.5
correct option is C
Question: There are 20 pieces of candy and 4 kids. How many pieces of candy does each kid get?
A.7
B.5
C.13
D.20
Answer: B.5
Explanation: If you split 20 pieces of candy between 4 kids each kid will get 5 pieces of candy
B
Question: In ΔPQS above, if PQ =2 and PS = 3, then
A. 3/2
B. 12/5
C. 16/5
D. 15/4
Answer: A. 3/2
Explanation: there are two ways to calculate area of PQS. area remains same, so both are equal.
2*3/2 = PR*4/2
PR = 3/2
A
Question: A train running at a speed of 60 kmph crosses a pole in 12 seconds.What is the length of the train?
A.200 m
B.180 m
C.190 m
D.150 m
Answer: A.200 m
Explanation: 60 kmph=50/3 m/sec
50/3*12=200 m
ANSWER:A
Question: In how many different ways can the letters of the word "NEGLIGENCE" be rearrangement?
A.3628800
B.3628800
C.3628812
D.3428800
Answer: B.3628800
Explanation: Option 'B'
The total number of arrangements is
10P10 = 10! = 3628800
Question: Express a speed of 342 kmph in meters per second?
A.10 mps
B.59 mps
C.79 mps
D.90 mps
Answer: D.90 mps
Explanation: 342 * 5/18 = 90 mps
Answer: D
Question: The juice stall at the circus stocked just 2 brands of orange juice tetra packs. Brand A costs $1 per pack and brand B costs $1.5 per pack. Last week , brand A contributed to m% of stall’s revenue and accounted for n% of sales of juice tetra packs. Which of the following expresses m in terms of n?
A.100n/(150 – n)
B.200n/(250-n)
C.200n/(300-n)
D.250n/(400-n)
Answer: C.200n/(300-n)
Explanation: Let the number of units sold be 100. Then n units of A are sold and (100-n) units of B are sold.
Total revenue= Revenue due to A + Revenue due to B
= (No.of units of A sold * Cost/unit of A) + (No.of units of B sold * cost/unit of B)
= n *1 + (100-n) *1.5
= n + (150-1.5n) --- (1)
2. But we know, revenue due to A = m%. of the total revenue --- (2)
3. To express m in terms of n we need to relate (1) and (2)
4. m% = n / ( n + (150-1.5n))
or m= 100n / 150-0.5n = 200n/(300-n)
ANSWER:C
Question: A man started driving at a constant speed, from the site of a blast, the moment he heard the blast. He heard a second blast after a time of 30 mins and 25 seconds. If the second blast occurred exactly 30 mins after the first, how many meters was he from the site when he heard the second blast? ( speed of sound = 330 m/s)
A.8250
B.9350
C.10,450
D.11,550
Answer: A.8250
Explanation: The distance the sound traveled to the man is 25*330 = 8250 meters
The answer is A.
Question: If 5 machines can produce 20 units in 10 hours, how long would it take 20 machines to produce 120 units?
A.50 hours
B.40 hours
C.15 hours
D.12 hours
Answer: C.15 hours
Explanation: Here, we're told that 5 machines can produce 20 units in 10 hours....
That means that EACH machine WORKS for 10 hours apiece. Since there are 5 machines (and we're meant to assume that each machine does the same amount of work), then the 5 machines equally created the 20 units.
20 units/5 machines = 4 units are made by each machine every 10 hours
Now that we know how long it takes each machine to make 4 units, we can break THIS down further if we choose to...
10 hours/4 units = 2.5 hours per unit when 1 machine is working.
The prompt asks us how long would it take 20 machines to produce 120 units.
If 20 machines each work for 2.5 hours, then we'll have 20 units. Since 120 units is '6 times' 20, we need '6 times' more TIME.
(2.5 hours)(6 times) = 15hours
Final Answer:
[Reveal]Spoiler:
C
Question: The length of the side of square A is twice the length of the side of square B. What is the ratio of the area of square A to the area of square B?
A.4:1
B.1:1
C.2:1
D.1:2
Answer: A.4:1
Explanation: Solution
Let x be the length of the side of square A and y be the length of the side of square B with x = 2 y. Area of A and B are given by
A = x^2 and B = y^2
But x = 2y. Hence
A = (2y)^2 = 4 y^2
The ratio of A to B is
4 y^2 / y^2 = 4 / 1 or 4:1
ANSWER IS A
Question: The value of log2 16 is
A.1/8
B.4
C.8
D.16
Answer: B.4
Explanation: Solution
Let log216	= n.
Then, 2n	= 16
= 24
‹=› n=4.
Answer B
Question: A man saves Rs 200 at the end of each year and lends the money at 5% compound interest. How
much will it become at the end of 3 years.
A.Rs 662
B.Rs 662.01
C.Rs 662.02
D.Rs 662.03
Answer: C.Rs 662.02
Explanation: Explanation:
=[200(2120×2120×2120)+200(2120×2120)+200(2120)]=662.02
Answer: C
Question: If X gets 25% more than Y and Y gets 20% more than Z, the share of Z out of Rs. 1480 will be:
A.Rs. 300
B.Rs. 200
C.Rs. 240
D.Rs. 400
Answer: D.Rs. 400
Explanation: Z share = Z,
Y = 1.2Z
X = 1.25Ã—1.2Z,
X+Y+Z =1480
(1.25Ã— 1.2+1.2+1)Z=1480
3.7Z=1480, Z=400
Answer: . D
Question: A,B,C and D play a game of cards. A says to B "If I give you 8 cards, you will have as many as C has and I shall have 3 less than what C has. Also if I take 6 cards from C, I shall have twice as many as D has". If B and D together have 50 cards, how many cards have A got?
A.40
B.37
C.23
D.27
Answer: A.40
Explanation: Explanation :
According to the question, following are the equations we get :-
B+8=C ---(i)
A−8=C–3 ---(ii)
A+6=2D ---(iii)
B+D=50 ---(iv)
On solving these equations, we get the value of A is 40 i.e A have 40 cards.
Answer : A
Question: How many mashes are there in 1 squrare meter of wire gauge if each mesh
is 8mm long and 5mm wide ?
A.2500
B.25000
C.250
D.250000
Answer: B.25000
Explanation: One square meter is equal to 1000000 sq mm.
Given, each mesh is 8mm and 5mm wide
Therefore for each mesh : 8*5 = 40 sq mm.
So, simply 1000000/40 = 25000
ANSWER:B
Question: The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?
A.23 years
B.24 years
C.25 years
D.None of these
Answer: A.23 years
Explanation: Let the average age of the whole team by x years.
11x - (26 + 29) = 9(x -1)
11x - 9x = 46
2x = 46
x = 23.
So, average age of the team is 23 years.
Answer: Option A
Question: Two trains of equal length, running with the speeds of 60 and 40 kmph, take 50 seconds to cross each other while they are running in the same direction. What time will they take to cross each other if they are running in opposite directions?
A.10 sec
B.16 sec
C.13 sec
D.67 sec
Answer: A.10 sec
Explanation: RS = 60 -40 = 20 * 5/18 = 100/18
T = 50
D = 50 * 100/18 = 2500/9
RS = 60 + 40 = 100 * 5/18
T = 2500/9 * 18/500 = 10 sec
Answer: A
Question: Find the one which does not belong to that group ?
A.237
B.232
C.223
D.426
Answer: D.426
Explanation: Explanation:
525 => 5 52,
39 => 3 32,
24 => 2 22,
636 => 6 62. The above pattern is not followed in 426.
Answer: D
Question: A dishonest dealer professes to sell goods at the cost price but uses a weight of 650 grams per kg, what is his percent?
A.15%
B.25%
C.65%
D.53.8%
Answer: D.53.8%
Explanation: Explanation:
650 --- 350
100 --- ? => 53.8%
Answer: D
Question: If r and b are positive numbers, and r^3 + b^3 = 75, then the greatest possible value of r is between:
A.0 and 3
B.3 and 5
C.4 and 5
D.5 and 7
Answer: C.4 and 5
Explanation: Yes the question is ambiguous, and the answer is certainly not C between 4 and 5 .
The question stated: r and b are positive numbers but not positive integers.
so fractions are allowed to be a part of calculation.
So if the answer is C then the value 4.5 = 9/2 must comply the equation.
(9/2)^3 + b^3 = 75
so, b^3 = -129/8 , which is not possible according to the question.
Moreover the question didn't mentioninclusive or not, so we can't assume that b is 4 .
hi asif,
question is correct IMO.
Sincemaximumvalues areuniqueso you cant take any value and make it satisfy with equation
question is asking that maximum value ofa(means that unique value ofa) is between...
its not saying all value of that range will satisfy.
Question: In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
A.6.25
B.6.5
C.6.75
D.7
Answer: A.6.25
Explanation: Required run rate = (282 - (3.2 x 10))/40	=	250/40 = 6.25
Answer : A
Question: If two integers x,y (x>y) are selected from -4 to 4 (inclusive), how many cases are there?
A.27
B.30
C.33
D.36
Answer: D.36
Explanation: There are 9 integers from -4 to 4 inclusive.
9C2 = 36.
The answer is D.
Question: Find how many positive integers less than 10,000 are there suchthat the sum of the digits of the no. is divisible by 3?
A.1324
B.1456
C.1567
D.3334
Answer: D.3334
Explanation: If sum of the digits is divisible by 3, the number is divisible by 3.
Therefore, required number of non-negative integers is equal to count of numbers less than 10,000 which are divisible by 3.
Such numbers are (3, 6, 9, ... , 9999) (arithmetic progression with first term=3, last term=9999, common difference=3).
Count of such numbers =
9999
3
=
3333
99993=3333
But zero is also divisible by 3.
This makes our total count 3334
D
Question: In the third grade of Windblown School there are 84 students, one third of them failed the math test and 1/6 failed that literature test. At least how many students failed both tests?
A.0.
B.6.
C.8.
D.10.
Answer: A.0.
Explanation: Total = 84
failed in math = 84/3=28
failed in literature=84/6=14
the least failed in both can be 0
while max can be 14
Answer A
Question: A boat can move upstream at 30 kmph and downstream at 35 kmph, then the speed of the current is?
A.5
B.2.5
C.7
D.4
Answer: B.2.5
Explanation: US = 30
DS = 35
M = (35 - 30)/2 = 2.5
Answer: B
Question: If y is the smallest positive integer such that 8820 multiplied by y is the square of an integer, then y must be
A.2
B.5
C.6
D.7
Answer: B.5
Explanation: 8820 = 2^2*3^2*5*7^2
To be perfect square, we need to multiply by at least 5.
The answer is B.
Question: A rope can make 70 rounds of the circumference of a cylinder whose radius of the base is 14cm. how many times can it go round a cylinder having radius 20 cm?
A.49 rounds
B.42 rounds
C.54 rounds
D.52 rounds
Answer: A.49 rounds
Explanation: Explanation :
Let the required number of rounds be x
More radius, less rounds(Indirect proportion)
Hence we can write as
radius14:20}::x:70
⇒ 14 × 70 = 20x
⇒ 14 × 7 = 2x
⇒ x = 7 × 7 = 49. Answer : Option A
Question: A and B can finish a work in 16 days while A alone can do the same work in 24 days. In how many days B alone will complete the work?
A.38
B.48
C.27
D.21
Answer: B.48
Explanation: B = 1/16 – 1/24 = 1/48 => 48 days . Answer: B