6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Solve the following :

123 + 12.3 + 1.23 + 0.123 + 0.0123 = ?

A) 136.7659	B) 136.653
C) 136.6653	D) 136.7760

Answer & Explanation Answer: C) 136.6653

Explanation:

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Q:

At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions?

A) 54 past 4	B) (53 + 7/11) past 4
C) (54 + 8/11) past 4	D) (54 + 6/11) past 4

Answer & Explanation Answer: D) (54 + 6/11) past 4

Explanation:

4 o'clock, the hands of the watch are 20 min. spaces apart.
To be in opposite directions, they must be 30 min. spaces apart.
Minute hand will have to gain 50 min. spaces.
55 min. spaces are gained in 60 min

50 min. spaces are gained in $\frac{60}{55} \times 50$ min. or $54 \frac{6}{11}$

Required time = $54 \frac{6}{11}$ min. past 4.

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325 95484

Q:

What value will come in place of question mark (?) in following number series?

12, 16, 32, 68, ?

A) 198	B) 164
C) 132	D) 118

Answer & Explanation Answer: C) 132

Explanation:

Given series is

12 16 32 68 ?

Here it follows a pattern that,

12

12 + (2x2) = 16

16 + (4x4) = 32

32 + (6x6) = 68

68 + (8x8) = 132

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7 95288

Q:

If the circumference of a circle is 22 cm, then what must be its area (in cm²)?

A) 77	B) 38.5
C) 31.5	D) 63

Answer & Explanation Answer: B) 38.5

Explanation:

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3 95032

Q:

Find the odd one out of the following number series?

9 5 6 14 56 488

A) 56	B) 6
C) 14	D) 5

Answer & Explanation Answer: A) 56

Explanation:

The given number series follows a pattern that,

9

9 x 0.5 + 0.5 = 5

5 x 1 + 1 = 6

6 x 2 + 2 = 14

14 x 4 + 4 = 60 (not equals to 56)

60 x 8 + 8 = 488.

Hence, the odd one in the given number series is 56.

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Q:

A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning?

Answer

Let the average after 7th inning = x

Then average after 16th inning = x - 3

16(x-3)+87 = 17x

x = 87 - 48 = 39

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Subject: Average Exam Prep: CAT , Bank Exams , AIEEE
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677 94875

Q:

If $3 x^{2} + kx + k = 0$ has no solution, then the value of k will satisfy

A) k > -12	B) k > 12
C) k < 12	D) 0 < k < 12

Answer & Explanation Answer: D) 0 < k < 12

Explanation:

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Q:

Find the dividend if the divisor is (x+2), quotient is (4x-5) and the remainder is 12.

A) 4x2+5x+2	B) 4x2+3x+2
C) 4x2-3x+2	D) 4x2+3x-2

Quantitative Aptitude - Arithmetic Ability Questions

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