6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:3 and area of ΔADE is 4 sq cm, what is the area (in sq cm) of quadrilateral BDEC.

A) 25	B) 21
C) 5	D) 9

Answer & Explanation Answer: B) 21

Explanation:

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Filed Under: Area
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Q:

The distance between the points (7,7) and (k,-5) is 13. Find k?

A) -2	B) 4
C) -4	D) 2

Answer & Explanation Answer: D) 2

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Filed Under: Simplification
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Q:

If x/2 - [4(15/2 - x/3)]/3 = -x/18, then what is the value of x?

A) -10	B) 9/8
C) 10	D) -9/8

Answer & Explanation Answer: C) 10

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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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Filed Under: Numbers
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Q:

What is the value of (2 - sin30°) ?

A) 3/2	B) 3/√2
C) 2-√3	D) (2√3-√6)/2√2

Answer & Explanation Answer: A) 3/2

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 8179	B) 7147
C) 8135	D) 9113

Answer & Explanation Answer: D) 9113

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Filed Under: Odd Man Out
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Q:

Select the related word/letters/number from the given alternatives.
1 : 8 :: ? :64

A) 25	B) 36
C) 30	D) 27

Answer & Explanation Answer: D) 27

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Filed Under: Ratios and Proportions
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Q:

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is

A) 85	B) 75
C) 70	D) 80

Quantitative Aptitude - Arithmetic Ability Questions

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