6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?

A) 42	B) 168
C) 84	D) 63

Answer & Explanation Answer: C) 84

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Q:

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

A) Rs.12200	B) Rs.12300
C) Rs.12400	D) Rs.12000

Answer & Explanation Answer: A) Rs.12200

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Filed Under: Percentage
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Q:

Find the HCF & LCM of 16, 24.

A) 8, 48	B) 4, 12
C) 2, 24	D) 4, 48

Answer & Explanation Answer: A) 8, 48

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Filed Under: HCF and LCM
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Q:

Sec 45% + Tan 30% =

A) (√6 + 1)/√3	B) (1 + √3)/2
C) (√3 + 2)/√3	D) 5/√3

Answer & Explanation Answer: A) (√6 + 1)/√3

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Filed Under: Simplification
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Q:

If A and B are the roots of the equation ${Ax}^{2} - A^{2} x + AB = 0$ , then what is the value of A and B respectively?

A) 1, 0	B) 1, 1
C) 0, 2	D) 0, 1

Answer & Explanation Answer: A) 1, 0

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Q:

What is the value of $\frac{1}{\sin^{4} (90 - θ)} + \frac{1}{[\cos^{2} (90 - θ) - 1]}$ ?

A) tan2θ sec2θ	B) sec4θ
C) tan4θ	D) tan2θ sin2θ

Answer & Explanation Answer: A) tan2θ sec2θ

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Q:

If secA + tanA = x, then find the value of x.

A) √[(1 - sinA)/(1 + sinA)]	B) (1 + sinA)/(1 - sinA)
C) (1 - sinA)/(1 + sinA)	D) √[(1 + sinA)/(1 - sinA)]

Answer & Explanation Answer: D) √[(1 + sinA)/(1 - sinA)]

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Filed Under: Simplification
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Q:

A sum of Rs 4000 becomes Rs 7000 in 6 years at simple interest. If the rate of interest becomes double of itself, then what will be the amount (in Rs) after 6 years?

A) 8500	B) 9000
C) 8000	D) 10000

Quantitative Aptitude - Arithmetic Ability Questions

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