6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 98 are wrong and the other digits are correct , then the correct answer would be :

A) 553681	B) 555181
C) 555681	D) 556581

Answer & Explanation Answer: C) 555681

Explanation:

987 = 3 * 7 * 47.
So, the required number must be divisible by each one of 3, 7, 47
553681 => (Sum of digits = 28, not divisible by 3)
555181 => (Sum of digits = 25, not divisible by 3)
555681 is divisible by each one of 3, 7, 47.

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Filed Under: Numbers

61 36700

Q:

In how many years will a sum of Rs.800 at 10% per annum compounded semi annually become Rs.926.10

A) 1.5	B) 2.5
C) 3.5	D) 4.5

Answer & Explanation Answer: A) 1.5

Explanation:

Let the time be 'n' years, Then

$800 \times {(1 + \frac{5}{100})}^{2} n = 926.10 < = > {(1 + \frac{5}{100})}^{2} n = \frac{9261}{8000} < = > {(\frac{21}{20})}^{2} n = {(\frac{21}{10})}^{3}$

n = 3/2 or n= 1 $\frac{1}{2}$ Years

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Filed Under: Simple Interest
Exam Prep: GRE

125 36682

Q:

Which of the following fractions is greater than 3 /4 and less than 5 / 6 ?

A) 3 / 5	B) 4 / 5
C) 7 / 5	D) 9 / 5

Answer & Explanation Answer: B) 4 / 5

Explanation:

3 /4 = 0.75, 5/6 = 0.833, 1/2 = .5, 2/3 = 0.66, 4/5 = 0.8, 9/10 = 0.9.

clearly 0.8 lies between 0.75 and .833.

4/5 lies between 3/4 and 5/6..

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Filed Under: Decimal Fractions

56 36622

Q:

The Indian Cricket team consists of 16 players. It includes 2 wicket keepers and 5 bowlers. In how many ways can a cricket eleven be selected if we have to select 1 wicket keeper and atleast 4 bowlers?

A) 1024	B) 1900
C) 2000	D) 1092

Answer & Explanation Answer: D) 1092

Explanation:

We are to choose 11 players including 1 wicket keeper and 4 bowlers or, 1 wicket keeper and 5 bowlers.

Number of ways of selecting 1 wicket keeper, 4 bowlers and 6 other players in $2 C_{1} * 5 C_{4} * 9 C_{6}$ = 840

Number of ways of selecting 1 wicket keeper, 5 bowlers and 5 other players in $2 C_{1} * 5 C_{5} * 9 C_{5}$ =252

Total number of ways of selecting the team = 840 + 252 = 1092

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Filed Under: Permutations and Combinations

35 36561

Q:

In the following question, select the odd word pair from the given alternatives.

A) Rectangle – Perimeter	B) Circle – Circumference
C) Perimeter – Square	D) Triangle – Perimete

Answer & Explanation Answer: C) Perimeter – Square

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 36548

Q:

The two lines 3x - 8y = 16 and 2x + 4y = 6 intersect at (a,b). Find the value of $a^{2} - 4 b^{2}$

A) 5	B) 10
C) 15	D) 20

Answer & Explanation Answer: C) 15

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams , AIEEE

0 36468

Q:

If the pice of sugar rises from Rs. 6 per kg to Rs. 7.50 per kg, a person, to have no increase in his expenditure on sugar, will have to reduce his consumpion of sugar by

A) 15	B) 20
C) 25	D) 30

Answer & Explanation Answer: B) 20

Explanation:

Let original consumption = 100 kg and new consumption = x kg,

So, 100 * 6 = x * 7.50 => x = 80kg

Reduction in consumption = 20%.

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Filed Under: Percentage

108 36386

Q:

The difference between the place value and the face value of 7 in the numeral 967452 is

A) 6393	B) 5831
C) 6993	D) 6339

Answer & Explanation Answer: C) 6993

Explanation:

(Place value of 7)-(face value of 7)
=7000-7=6993.

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Filed Under: Numbers

106 36378

Quantitative Aptitude - Arithmetic Ability Questions

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