6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Select the odd number from the given alternatives.

A) 8	B) 27
C) 100	D) 125

Answer & Explanation Answer: C) 100

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Q:

If √[(1 - cosA)/2] = x, then the value of x is

A) cos(A/2)	B) tan(A/2)
C) sin(A/2)	D) cot(A/2)

Answer & Explanation Answer: C) sin(A/2)

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Q:

Expand and simplify ${(x + 5)}^{2} + {(x - 3)}^{2}$

A) 2(x2 + 2x - 17)	B) 2(x2 - 2x + 17)
C) 2(x2 - 2x - 17)	D) 2(x2 + 2x + 17)

Answer & Explanation Answer: D) 2(x2 + 2x + 17)

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Q:

Find the value of $\sin^{2} 30 \cos^{2} 45 + 4 \tan^{2} 30 + (1 / 2) \sin^{2} 90 - 2 \cos^{2} 90 + (1 / 24)$

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

Answer & Explanation Answer: C) 2

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Q:

What is the value of $[(\sin 59 ° \cos 31 ° + \cos 59 ° \sin 31 °) \div (\cos 20 ° \cos 25 ° - \sin 20 ° \sin 25 °)] ?$

A) 1/√2	B) 2√2
C) √3	D) √2

Answer & Explanation Answer: D) √2

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Q:

If $x^{2} + 5 x + 6 = 0$ , then the value of $\frac{2 x}{x^{2} - 7 x + 6}$ is

A) 1/6	B) 1/3
C) -1/6	D) -1/3

Answer & Explanation Answer: C) -1/6

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Q:

One of four words is a class to which the other three belong. Identify the class.

A) Hawaii	B) Cuba
C) Island	D) Greenland

Answer & Explanation Answer: C) Island

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Q:

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

A) 32 days	B) 28 days
C) 29 days	D) 30 days

Quantitative Aptitude - Arithmetic Ability Questions

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