6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the equation of the line whose y-intercept is 4 and making an angle of 45° with the positive x-axis?

A) x + y = -4	B) x - y = 4
C) x + y = 4	D) x - y = -4

Answer & Explanation Answer: D) x - y = -4

Explanation:

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Q:

Find the value of p if -3x - 11, x + p and 5x + 7 are in arithmetic progression.

A) 9	B) 2
C) -9	D) -2

Answer & Explanation Answer: D) -2

Explanation:

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Q:

Find the value of $27 a^{3} + \frac{1}{a^{3}}$ , if $9 a^{2} + \frac{1}{a^{2}} = 43$

A) 240	B) 280
C) 320	D) 360

Answer & Explanation Answer: B) 280

Explanation:

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Q:

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

A) 33	B) 44
C) 55	D) 66

Answer & Explanation Answer: C) 55

Explanation:

All such 2 digit numbers are 11,22,33,44....... upto 99

Forms an AP

So sum = n/2(a+l)

= 9/2(11+99)

Average = sum/9 = ½(11+99) = 55

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Q:

Mr. Ibrahim borrowed Rs. 7500 at 5% per annum compound interest. The compound interest compounded annually for 2 years is

A) 768.75	B) 8268.75
C) 8286.75	D) 786.75

Answer & Explanation Answer: B) 8268.75

Explanation:

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Q:

What is the reflection of the point (2, 3) in the line y = 4?

A) (2, 5)	B) (2, -5)
C) (-2, -5)	D) (-2, 5)

Answer & Explanation Answer: A) (2, 5)

Explanation:

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Q:

If cos 2π/3c = x, then the value of x is

A) -1/2	B) 1/2
C) -√3/2	D) √3/2

Answer & Explanation Answer: A) -1/2

Explanation:

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Q:

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

A) CEF	B) GIJ
C) LNO	D) STW

Quantitative Aptitude - Arithmetic Ability Questions

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