6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The missing number in the Series

114, 131, 165, 216, ?, 369

A) 314	B) 304
C) 294	D) 284

Answer & Explanation Answer: D) 284

Explanation:

114 131 165 216 ? 369

+17 +34 +51 +68 +85

=> The missing number in the given Number series = 216 + 68 = 284.

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7 95314

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 94704

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

Workspace

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677 94488

Q:

What should come in place of question mark (?) in the following question?

65% × 700 + √196 – 9 × 3 = ?

A) 522	B) 442
C) 402	D) 362

Answer & Explanation Answer: B) 442

Explanation:

As per the BODMAS rule, Addition and subtraction can be treated on same priority (from left to right) when they are in consecutive order.

65% × 700 + 14 - 9 × 3 65 × (700/100) + 14 - 27 455 + 14 - 27 = 442

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0 93611

Q:

The radius of base of a right circular cone is 6cm and its slant height is 10cm. Then its volume is

$(u s e π = \frac{22}{7})$

A) 301.71 cm3	B) 310.71 cm3
C) 301.17 cm3	D) 310.17 cm3

Answer & Explanation Answer: A) 301.71 cm3

Explanation:

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0 92901

Q:

Select the option that can replace the '?' symbol in the following equation.

122 + 345 - 1 x 1011 $\div$ 337 = ?

A) 446	B) 644
C) 460	D) 464

Answer & Explanation Answer: D) 464

Explanation:

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0 92567

Q:

In the following number series, one of the numbers is wrong. Find it out?

77, 79, 76, 81, 75, 85

A) 79	B) 81
C) 75	D) 85

Answer & Explanation Answer: C) 75

Explanation:

Here in the given series, it follows a pattern that

77 + 2 = 79

79 - 3 = 76

76 + 5 = 81

81 - 7 = 74

74 + 11 = 85

Consecutive adding and subtracting of prime numbers.

So the wrong number in the given series is 75.

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7 92325

Q:

${(a - b)}^{2} + 2 ab = ?$

A) a2 - b2	B) a2 + b2
C) a2 - 4ab + b2	D) a2 - 2ab + b2

Quantitative Aptitude - Arithmetic Ability Questions

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