6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If xy = 56 and $x^{2} + y^{2} = 113$ , then what will be the value of (x + y)?

A) 29	B) 21
C) 36	D) 15

Answer & Explanation Answer: D) 15

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

3 2724

Q:

An item is sold at two successive gains of 30% and 20%. If the final selling price is Rs 31200, then what is the cost price (in Rs)?

A) 15000	B) 20000
C) 22250	D) 24000

Answer & Explanation Answer: B) 20000

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 2723

Q:

1/8 as a decimal?

A) 0.125	B) 0.225
C) 0.325	D) 0.425

Answer & Explanation Answer: A) 0.125

Explanation:

1/8 to convert into decimal,

Find an equivalent fraction with a denominator of a power of 10.

In this case, we will use 1000.

$\frac{1}{8} x \frac{125}{125} = \frac{125}{1000}$

This can now be written as a decimal with 3 decimal places (because we have thousandths.

i.e, 0.125

Hence, $\frac{1}{8} as a decimal = 0.125$

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

9 2720

Q:

A shopkeeper purchased 10 boxes of pencils containing 10 pencils each at Rs. 100 per box and sold each pencil at a profit 12%. What is the total sale price?

A) Rs.1100	B) Rs.1120
C) Rs.1200	D) Rs.1210

Answer & Explanation Answer: B) Rs.1120

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 2718

Q:

If $27^{x} + 27^{[x - (1 / 3)]}$ = 972, then what is the value of x?

A) 2	B) 3
C) 4	D) 5

Answer & Explanation Answer: A) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2718

Q:

The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find two numbers.

A) 10 & 12	B) 10 & 18
C) 12 & -18	D) -12 & 18

Answer & Explanation Answer: D) -12 & 18

Explanation:

Given, difference of the squares of two numbers is 180.

= k² - l² - 180

Also, square of the smaller number is 8 times the larger.

= l²= 8k

Thus, k² - 8a - 180 = 0

k² – 18k + 10k - 180 = 0

→ k(k - 18) + 10(k – 18) = 0

= (k + 10)(k – 18) = 0

→ k = -10, 18

Thus, the other number is

324 - 180 = l²

→ Numbers are 12, 18 or -12, 18.

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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

0 2716

Q:

From a pack of 52 cards, 3 cards are drawn together atrandom, What is the probability of both the cards are king?

A) 1/5225	B) 1/5525
C) 5525	D) 1/525

Answer & Explanation Answer: B) 1/5525

Explanation:

n(S) = 52C3 = 132600/6 = 22100

n(E) = 4C3 = 24/6 = 4

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Filed Under: Permutations and Combinations

9 2716

Q:

Which instrument is used for viewing the sun?

A) Stroboscope	B) Telescope
C) Helioscope	D) Sun meter

Quantitative Aptitude - Arithmetic Ability Questions

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