6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A rectangular courtyard 3.78 meters long 5.25 meters wide is to be paved exactly with square tiles, all of the same size. what is the largest size of the tile which could be used for the purpose?

A) 14 cms	B) 21 cms
C) 42 cms	D) None of these

Answer & Explanation Answer: B) 21 cms

Explanation:

3.78 meters =378 cm = 2 × 3 × 3 × 3 × 7

5.25 meters=525 cm = 5 × 5 × 3 × 7

Hence common factors are 3 and 7

Hence LCM = 3 × 7 = 21

Hence largest size of square tiles that can be paved exactly with square tiles is 21 cm.

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Filed Under: HCF and LCM

169 70662

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 70651

Q:

Find the value of

$n + \frac{3 n}{2} + \frac{9 n}{4} + . . . . . . \infty$

A) 0	B) 1
C) 2	D) infinity

Answer & Explanation Answer: D) infinity

Explanation:

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Filed Under: Simplification

4 70620

Q:

Question :

What is the sum which earned interest ?

Statements :

a. The total simple interest was Rs. 9000 after 9 years.
b. The total of sum and simple interest was double of the sum after 6 years.

A) Only a is sufficient	B) Neither a nor b is sufficient
C) Only b is sufficient	D) Both a and b sufficient

Answer & Explanation Answer: D) Both a and b sufficient

Explanation:

Let the sum be Rs. x

a. gives, S.I = Rs. 9000 and time = 9 years.

b. gives, Sum + S.I for 6 years = 2 x Sum

--> Sum = S.I for 6 years.

Now, S.I for 9 years = Rs. 9000

S.I for 1 year = Rs. 9000/9 = Rs. 1000.

S.I for 6 years = Rs. (1000 x 6)= Rs. 6000.

--> x = Rs. 6000

Thus, both a and b are necessary to answer the question.

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Filed Under: Simple Interest
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

8 70592

Q:

The average of two numbers is 10 and the product of two numbers is 96. Find the two numbers.

A) 3, 32	B) 12, 8
C) 1, 96	D) 24, 4

Answer & Explanation Answer: B) 12, 8

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

3 70509

Q:

Simplify: (157 x 157 + 143 x 143)

A) 45098	B) 46098
C) 90196	D) 91196

Answer & Explanation Answer: A) 45098

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams , CAT

0 70218

Q:

Find the odd man out?

3, 12, 39, 120, 364

A) 364	B) 120
C) 39	D) 3

Answer & Explanation Answer: A) 364

Explanation:

The given number series is 3, 12, 39, 120, 364

$3 3 + 3^{2} = 3 + 9 = 12 12 + 3^{3} = 12 + 27 = 39 39 + 3^{4} = 39 + 81 = 120 120 + 3^{5} = 120 + 243 = 363 (Not 364)$

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

7 70168

Q:

If the diameter of a circle is 28 cm, then what will be its circumference (in cm)?

A) 88	B) 176
C) 35	D) 70

Quantitative Aptitude - Arithmetic Ability Questions

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