6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

For triangle PQR, what is the equation of altitude PS if coordinates of P, Q and R are (5,1), (0,4) and (2,3) respectively?

A) 7x + 2y = 33	B) 2x - 7y = 9
C) 2x - 7y = -3	D) 7x + 2y = -33

Answer & Explanation Answer: B) 2x - 7y = 9

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Q:

If $x = \sqrt{a} + \frac{1}{\sqrt{a}}, y = \sqrt{a} - \frac{1}{\sqrt{a}}, (a > 0),$ then the value of $x^{4} + y^{4} - 2 x^{2} y^{2}$ is

A) 16	B) 20
C) 10	D) 5

Answer & Explanation Answer: A) 16

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Q:

If $x = \sqrt[2]{x^{2} + 11} - 2, then x^{3} + 5 x^{2} + 12 x$ is

A) 0	B) 3
C) 7	D) 11

Answer & Explanation Answer: B) 3

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Q:

Which of the following is not a quadratic equation?

A) 2x(x + 4) -11 = x(x - 3) + 6	B) 4x(x + 4) -11 = 5x(x - 3) + 5
C) x(x + 2) -15 = x(x - 5) + 11	D) 2x2 + 8x - 11 = 0

Answer & Explanation Answer: C) x(x + 2) -15 = x(x - 5) + 11

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Q:

What is the value of √[(1 + sinA)/(1 - sinA)]?

A) secA - tanA	B) cosecA + tanA
C) secA + tanA	D) cosecA - tanA

Answer & Explanation Answer: C) secA + tanA

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Q:

Select the odd letters from the given alternatives.

A) UTS	B) PNM
C) KIH	D) FDC

Answer & Explanation Answer: A) UTS

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Q:

Simplify $576 b^{3} x^{2} a^{4} z^{3} / 36 a^{3} b^{2} z$

A) 16bx2az2	B) 8bx2az2
C) 32ba2 z	D) 32bxa2

Answer & Explanation Answer: A) 16bx2az2

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Q:

What is the perimeter of the sector whose central angle is 60° and radius of the circle is 21 cm?

A) 128 cm	B) 96 cm
C) 64 cm	D) 32 cm

Quantitative Aptitude - Arithmetic Ability Questions

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