6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

ΔXYZ is right angled at Y. If m∠Z = 30°, then find the value of (sinX - 3/√2).

A) (√6-6)/2√2	B) (√2-√3)/√6
C) -1/2	D) (1-2√3)/2

Answer & Explanation Answer: A) (√6-6)/2√2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 103080

Q:

Find the Missing number in the given Series ?

2, 3, 6, 15, ? , 157.5

A) 87	B) 78.5
C) 56.5	D) 45

Answer & Explanation Answer: D) 45

Explanation:

Here given

2, 3, 6, 15, ? , 157.5

2 x 1.5 = 3

3 x 2 = 6

6 x 2.5 = 15

15 x 3 = 45

45 x 3.5 = 157.5

Therefore, the missing number is 45

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

7 102828

Q:

What number should replace the question mark?

125, 138, 164, ?, 255

A) 189	B) 197
C) 200	D) 203

Answer & Explanation Answer: D) 203

Explanation:

The given number series is 125, 138, 164, ?, 255

125

125 + 13x1 = 138

138 + 13x2 = 164

164 + 13x3 = 203

203 + 13x4 = 255

Hence, the missing number in the series is 203.

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

5 102543

Q:

A, B and C enter into a partnership and their shares are in the ratio 1/2 : 1/3 : 1/4. After 2 months, A withdraws half of his capital and after 10 months, a profit of Rs. 378 is divided among them. What is B's share ?

A) 144	B) 169
C) 225	D) 339

Answer & Explanation Answer: A) 144

Explanation:

Ratio of initial investments = 1/2 : 1/3 : 1/4 = 6 : 4 : 3.

Let their initial investments be 6x, 2x and 3x respectively.

A : B : C = (6x * 2 + 3x * 10) : (4x * 12) : (3x * 12) = 42 : 48 : 36 = 7 : 8 : 6.

B's share = Rs. (378 * 8/21) = Rs. 144.

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Filed Under: Partnership

149 102311

Q:

The perimeter of a square is 34 cm. Find its area (in cm2).

A) 144.5	B) 82.25
C) 164.5	D) 72.25

Answer & Explanation Answer: D) 72.25

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

3 102244

Q:

If a/b = 1/4, b/c = 1/8 and a = 2 then the value of c is -

A) 8	B) 16
C) 32	D) 64

Answer & Explanation Answer: D) 64

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

1 102123

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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Filed Under: Simplification
Exam Prep: Bank Exams

0 102060

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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