6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of ${[\tan (90 - A) + \cot (90 - A)]}^{2} / [2 \sec^{2} (90 - 2 A)]$ ?

A) 0	B) 1
C) 2	D) – 1

Answer & Explanation Answer: C) 2

Explanation:

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Filed Under: Simplification
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Q:

Expand and simplify ${(x + 4)}^{2} + {(x - 2)}^{2}$

A) 2(x2 + 2x + 10)	B) 2(x2 + 2x - 10)
C) 2(x2 - 2x + 10)	D) 2(x2 - 2x - 10)

Answer & Explanation Answer: A) 2(x2 + 2x + 10)

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Q:

Determine the value of ${(y - \frac{1}{y})}^{2}$ when $y^{4} + \frac{1}{y^{4}} = 34$

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: D) 4

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Q:

If $\frac{3}{(x + 2) (2 x + 1)} = \frac{a}{2 x + 1} + \frac{b}{x + 2}$ be an identity, then the value of b

A) 0	B) -1
C) 2	D) 3

Answer & Explanation Answer: B) -1

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Q:

ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?

A) 2/√3	B) 2/3
C) √2/√3	D) √2/3

Answer & Explanation Answer: A) 2/√3

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Q:

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

A) 7.5%	B) 7%
C) 6%	D) 6.5%

Answer & Explanation Answer: B) 7%

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Filed Under: Compound Interest
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Q:

The Simple Interest(SI) for 16 years on an amount at particular rate is Rs 10000. If the principal is doubled at an interval of every 4 years and the rate is tripled at every such in terval, find the new Simple Interest(SI)

A) 632100	B) 689620
C) 602260	D) 647500

Answer & Explanation Answer: D) 647500

Explanation:

Let New SI be X

10000/16 = X/4(1*1+2*3+4*9+8*27)

10000/16=X/4(1+6+36+216)

X=647500

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

If Reena sold 12 mobile phones for Rs. 1,88,160 which cost Rs. 14,056 per phone, what was the total profit made by her?

A) Rs. 19,488	B) Rs. 17,621
C) Rs. 21,014	D) Rs. 18,958

Quantitative Aptitude - Arithmetic Ability Questions

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