Quantitative Aptitude - Arithmetic Ability Questions

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:

Two fractions are such that their product is ­2/5 and sum is 1/15. What are the two fractions.

A) 4/3, ­-3/10 B) 2/7, -­7/5
C) 4/7, ­-7/10 D) 2/3, ­-3/5
 
Answer & Explanation Answer: D) 2/3, ­-3/5

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Q:

The simplified form of (x + 3)2 + (x - 1)2 is

A) (x2 + 2x + 5) B) 2(x2 + 2x + 5)
C) (x2 - 2x + 5) D) 2(x2 - 2x + 5)
 
Answer & Explanation Answer: B) 2(x2 + 2x + 5)

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Q:

Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.

A) 540 B) 538
C) 542 D) 552
 
Answer & Explanation Answer: B) 538

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Filed Under: Problems on Numbers
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Q:

Smaller diagonal of a rhombus is equal to length of its sides. If length of each side is 6 cm, then what is the area (in sq.cm) of an equilateral triangle whose side is equal to the bigger diagonal of the rhombus?

A) 18√3 B) 27√3
C) 32√3 D) 36√3
 
Answer & Explanation Answer: B) 27√3

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Filed Under: Volume and Surface Area
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Q:

If curved surface area of a cylinder is 1320 sq cm and height is 10 cm, find its radius?

A) 21 cm B) 42 cm
C) 63 cm D) 10.5 cm
 
Answer & Explanation Answer: A) 21 cm

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Q:

If x4+1x4=119, then the value of x-1x is

A) 6 B) 12
C) 11 D) 3
 
Answer & Explanation Answer: D) 3

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Q:

How many balls of radius 2 cm can be made by melting a bigger ball of diameter 16 cm? (Take π = 22/7)

A) 64 B) 128
C) 32 D) 96
 
Answer & Explanation Answer: A) 64

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