6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The length of a diagonal in cms of a rectangle of length 5 cm and width 3 cm is

A) √34	B) +-√34
C) 4	D) +-4

Answer & Explanation Answer: A) √34

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

2 87757

Q:

If each edge of a cube is increased by 50%, find the percentage increase in Its surface area

A) 125%	B) 150%
C) 175%	D) 110%

Answer & Explanation Answer: A) 125%

Explanation:

Let the edge = a cm

So increase by 50 % = a + a/2 = 3a/2

Total surface Area of original cube = $6 a^{2}$

TSA of new cube = $6 {(\frac{3 a}{2})}^{2}$ = $6 (\frac{9 a^{2}}{4})$ = $13.5 a^{2}$

Increase in area = $13.5 a^{2} - 6 a^{2}$ = $7.5 a^{2}$

$7.5 a^{2}$ Increase % = $\frac{7.5 a^{2}}{6 a^{2}} \times 100$ = 125%

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Filed Under: Volume and Surface Area

484 87541

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 87536

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 87277

Q:

Simplify : ${(25)}^{\frac{3}{2}}$

A) 625	B) 15625
C) 125	D) √125

Answer & Explanation Answer: C) 125

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 87152

Q:

Find the missing number in the given number series?

514, 470, ?, 415, 404

A) 441	B) 437
C) 426	D) 420

Answer & Explanation Answer: B) 437

Explanation:

Given number series is 514 470 ? 415 404

Here the pattern it follows is

514

514 - 44 = 470

470 - 33 = 437

437 - 22 = 415

415 - 11 = 404

Hence, the missing number in the given number series is 437.

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

4 87122

Q:

Simplify : 5x - 2x(x-1)

A) 3x-2	B) 3x+2
C) 7x+2x2	D) 7x-2x2

Answer & Explanation Answer: D) 7x-2x2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 86850

Q:

Find x.

693.5 - (47.23 - x) - 82.48 = 8.172.

A) -720.578	B) -555.618
C) -650.078	D) 831.382

Quantitative Aptitude - Arithmetic Ability Questions

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