6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Direction: What should come in the place of question mark (?) in the following number series?

7, 10, 16, 28, ?, 100

A) 34	B) 40
C) 52	D) 60

Answer & Explanation Answer: C) 52

Explanation:

The pattern followed is +3 , +6 , +12 , +24 , +48

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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , GATE

0 85761

Q:

Find the odd man out in the following number series?

71, 88, 113, 150, 203, 277

A) 277	B) 203
C) 150	D) 113

Answer & Explanation Answer: A) 277

Explanation:

The given number series is

71 88 113 150 203 277

+17 +25 +37 +53 +74

+8 +12 +16 +21

+4 +4 +5

The series should be 71 88 112 150 203 276 i.e, the differences of the difference should be +4.

Hence, the odd man in the given series is 277.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

2 85525

Q:

A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half. The number of pupils in the class is :

A) 45	B) 40
C) 39	D) 37

Answer & Explanation Answer: B) 40

Explanation:

Let there be x pupils in the class.

Total increase in marks = (x * 1/2) = x/2.

x/2 = (83 - 63) => x/2 = 20 => x = 40.

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Filed Under: Average

201 85275

Q:

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

A) 0	B) -1
C) 1	D) none of these

Answer & Explanation Answer: A) 0

Explanation:

Average of 20 numbers = 0.

Sum of 20 numbers = (0 * 20) = 0.

It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (- a).

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Filed Under: Average

280 85102

Q:

If one needs to score 34% to pass a test, the pass marks out of 40 would be:

A) 13.2	B) 14.2
C) 13.6	D) 14.6

Answer & Explanation Answer: C) 13.6

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

16 85091

Q:

Solve the following :

(-4){19 - (-2) x (-8)} = ?

A) 12	B) -140
C) 140	D) -12

Answer & Explanation Answer: D) -12

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 84737

Q:

What approximate value will come in place of the question mark(?) in the below question?

(47% of 1442 - 36% of 1412) + 63 = ?

A) 4	B) 5
C) 3	D) 6

Answer & Explanation Answer: C) 3

Explanation:

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Filed Under: Problems on Numbers

25 84572

Q:

Given w = -2, x = 3, y = 0 & z = -1/2. Find the value of $2 (w^{2} + x^{2} + y^{2})$ .

A) 26	B) -26
C) 25	D) 28

Quantitative Aptitude - Arithmetic Ability Questions

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