6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Given that the polynomial $(x^{2} + ax + b)$ leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

A) 4 and 0	B) 0 and 3
C) 3 and 0	D) 0 and any interger

Answer & Explanation Answer: D) 0 and any interger

Explanation:

Since x^2+ ax + b when divided by x-1 or x+1 leaves the same remainder

So on putting x=1 and x=-1 we get the same value

1+a+b = 1-a+b

2a=0

a=0

here b can take any value as it will always get cancelled out

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Q:

The diagonal of a square is 12 cm what is the length (in cm) of its side?

A) 6√2	B) 12√2
C) 6	D) 9

Answer & Explanation Answer: A) 6√2

Explanation:

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Q:

In a Rhombus ABCD, measure of angle CAB is 25°, what is the measure of angle ABC?

A) 65°	B) 50°
C) 40°	D) 130°

Answer & Explanation Answer: D) 130°

Explanation:

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Q:

30% discount is offered on an item. By applying a promo code the customer wins 10% cash back. What is the effective discount?

A) 40.7 percent	B) 40 percent
C) 37 percent	D) 13 percent

Answer & Explanation Answer: C) 37 percent

Explanation:

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Q:

46% of 250 is equal to

A) 115	B) 92
C) 112	D) 13.5

Answer & Explanation Answer: A) 115

Explanation:

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Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

A) Rs 2500	B) Rs 5000
C) Rs 10000	D) Rs 7500

Answer & Explanation Answer: A) Rs 2500

Explanation:

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Q:

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

A) 40 and 31	B) 72 and 63
C) 42 and 33	D) 68 and 59

Answer & Explanation Answer: C) 42 and 33

Explanation:

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Q:

In what time will a 100 metre long train running with a speed of 50 km/hr cross a pillar?

A) 7.0 sec	B) 72 sec
C) 7.2 sec	D) 70 sec

Quantitative Aptitude - Arithmetic Ability Questions

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