6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of (sin30° + 1/3) ?

A) (2√2+√3)/2	B) (√6+1)/√3
C) 7/3	D) 5/6

Answer & Explanation Answer: D) 5/6

Explanation:

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Q:

Find the approximate value of ? in ${(14.998)}^{3} = ?$

A) 3573	B) 4096
C) 3378	D) 3374

Answer & Explanation Answer: D) 3374

Explanation:

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3 55439

Q:

What is the value of [(√529) + (√5.29) + (√0.0529)]?

A) 25.323	B) 25.53
C) 23.253	D) 23.53

Answer & Explanation Answer: B) 25.53

Explanation:

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Q:

Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:

A) 3/20	B) 29/34
C) 47/100	D) 13/102

Answer & Explanation Answer: D) 13/102

Explanation:

Let S be the sample space.

Then, n(S) = $52 C_{2}$ =(52 x 51)/(2 x 1) = 1326.

Let E = event of getting 1 spade and 1 heart.

n(E)= number of ways of choosing 1 spade out of 13 and 1 heart out of 13 = $13 C_{1} * 13 C_{1}$ = 169.

P(E) = n(E)/n(S) = 169/1326 = 13/102.

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95 55305

Q:

The area of the largest circle that can be drawn inside a rectangle with sides 18cm by 14cm is

A) 49	B) 154
C) 378	D) 1078

Answer & Explanation Answer: B) 154

Explanation:

The diameter is equal to the shortest side of the rectangle.

So radius= 14/2 = 7cm.

Therefore, $a r e a o f c i r c l e = {πr}^{2} = \frac{22}{7} \times 49 = 154 {cm}^{2}$

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86 55217

Q:

If Tan A = 15/8 and Tan B = 7/24, then Cos (A + B) = ?

A) 87/425	B) 304/425
C) 297/425	D) 416/425

Answer & Explanation Answer: A) 87/425

Explanation:

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Q:

Odd man out of the series

90 72 56 42 36 20

A) 20	B) 36
C) 42	D) 56

Answer & Explanation Answer: B) 36

Explanation:

The given number series is 90 72 56 42 36 20

9 x 10 = 90

8 x 9 = 72

7 x 8 = 56

6 x 7 = 42

5 x 6 = 30 (not 36)

4 x 5 = 20

Hence, the odd man in the given number series is 36.

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8 55193

Q:

Which of the following value of 'x' satisfies the equation

$4^{x - 1} . 9^{2 x - 6} = 5184$

A) 2	B) 3
C) 4	D) 6

Quantitative Aptitude - Arithmetic Ability Questions

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