6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If a + b = 10 and $\sqrt{\frac{a}{b}} - 13 = - \sqrt{\frac{b}{a}} - 11$ , then what is the value of $3 ab + 4 a^{2} + 5 b^{2}$ ?

A) 450	B) 300
C) 600	D) 750

Answer & Explanation Answer: B) 300

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Q:

Marked price of an item is Rs 300. On purchase of 2 items discount is 24%, on purchase of 5 items discount is 38%. Rachna buys 7 items, what is the effective discount?

A) 17.5 percent	B) 20.4 percent
C) 34 percent	D) 12.8 percent

Answer & Explanation Answer: C) 34 percent

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Q:

In a rectangle _____.

A) Diagonals are perpendicular to each other	B) Diagonals are not equal
C) Diagonals bisect each other	D) Diagonals bisect opposite angles

Answer & Explanation Answer: C) Diagonals bisect each other

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Q:

Which is the correct ascending order of the given numbers?

A) 1/3, 4/15, 0.33	B) 1/3, 0.33, 4/15
C) 4/15, 0.33, 1/3	D) 0.33, 4/15, 1/3

Answer & Explanation Answer: C) 4/15, 0.33, 1/3

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Q:

The length of the base of an isosceles triangle is 2x2y+4z, and its perimeter is 4x2y+6z. Then the length of each of the equal sides is

A) x+y	B) x+y+z
C) 2(x+y)	D) x+z

Answer & Explanation Answer: D) x+z

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Q:

D and E are points on the sides AB and AC respectively of ΔABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ΔDEF and ΔCBF

A) 16:25	B) 16:81
C) 81:16	D) 4:9

Answer & Explanation Answer: B) 16:81

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Q:

What is the value of ${(4a}^{2} + 8 b + 14 c + 2) / 2$ ?

A) 2a2 + 4b + 7c + 1	B) a2 + 4b + 7c + 1
C) 2a2 + 4b + 7c + 2	D) a2 + 4b + 7c + 2

Answer & Explanation Answer: A) 2a2 + 4b + 7c + 1

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Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) Lithosphere	B) Hydrosphere
C) Biosphere	D) Mantle

Quantitative Aptitude - Arithmetic Ability Questions

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