6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Ticket for an adult is Rs 1000 and a child is Rs 500. One child goes free with two adults. If a group has 17 adults and 5 children what is the discount the group gets?

A) 14.7 percent	B) 32 percent
C) 12.82 percent	D) 22 percent

Answer & Explanation Answer: C) 12.82 percent

Explanation:

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Q:

In the question given below, two equations are provided. Solve the equations and establish the relationship between x and y

$I . 2 x^{2} - 13 x - 189 = 0 II . 2 y^{2} - 3 y - 189 = 0$

A) x>y	B) x≥y
C) x<y	D) x≤y

Answer & Explanation Answer:

Explanation:

I. 2x2 - 13x - 189 = 0 2x2 - 27x + 14x - 189 = 0 x(2x - 27) + 7(2x - 27) = 0 x = -7, 27/2

II. 2y2 - 3y - 189 = 0 2y2 - 21y + 18y - 189 = 0 y(2y - 21) + 9(2y - 21) = 0 y = -9, 21/2

When x, as well as y, have both positive and negative values then no relationship can be established between them because if we consider x to be positive then the negative value of y will be lesser than x. If we consider x to be negative then positive value of y will be greater than x.

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Q:

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A) 11 – 121	B) 12 – 144
C) 15 – 225	D) 13 – 171

Answer & Explanation Answer: D) 13 – 171

Explanation:

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Q:

If $a^{3} + b^{3} = 19$ and a + b = 1, then what is the value of ab?

A) 5	B) -6
C) 7	D) -9

Answer & Explanation Answer: B) -6

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Q:

If A is 40% more than B, then B is how much percent less than A?

A) 28.57	B) 40
C) 33.33	D) 66.66

Answer & Explanation Answer: A) 28.57

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Q:

Aditya got 78% marks in the examination. If he secured 663 marks, find the maximum marks.

A) 700	B) 800
C) 750	D) 850

Answer & Explanation Answer: D) 850

Explanation:

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Q:

What is the value of (cos 40° – cos 140°)/(sin 80° + sin 20°)?

A) 2√3	B) 2/√3
C) 1/√3	D) √3

Answer & Explanation Answer: B) 2/√3

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Q:

A book seller allowed 10% discount on printed price. He gets 30% commission from publisher. His profit in percent will be

A) 20	B) 28 4/7
C) 25	D) 26 3/7

Quantitative Aptitude - Arithmetic Ability Questions

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