Quantitative Aptitude - Arithmetic Ability Questions

Q:

If cosec 45° - sin 30° = x, then x is

A) 5/√3 B) (√6-1)/√2
C) √3+2 D) (2√2-1)/2
 
Answer & Explanation Answer: D) (2√2-1)/2

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Q:

Which of the following numbers is not a prime number?

A) 731 B) 227
C) 347 D) 461
 
Answer & Explanation Answer: A) 731

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Q:

How many kilometers are there in one metre?

A) 0.01 B) 0.0001
C) 0.001 D) 0.1
 
Answer & Explanation Answer: C) 0.001

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Q:

What is the value of a2 + b2a3 - b3, when a + b = 8 and a - b = 2?

A) 0.313 B) 0.347
C) 0.368 D) 0.381
 
Answer & Explanation Answer: B) 0.347

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Q:

A hollow hemispherical bowl is made of silver with its outer radius 8 cm and inner radius 4 cm respectively. The bowl is melted to form a solid right circular cone of radius 8 cm. The height of the cone formed is

A) 7 cm B) 9 cm
C) 12 cm D) 14 cm
 
Answer & Explanation Answer: D) 14 cm

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Q:

The midpoints of AB and AC of a triangle ABC are X and Y respectively. If BC+XY=12 units, then BC­XY is

A) 10 units B) 8 units
C) 6 units D) 4 units
 
Answer & Explanation Answer: D) 4 units

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Filed Under: Volume and Surface Area
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Q:

Which of the following numbers is not composite?

A) 209 B) 203
C) 161 D) 109
 
Answer & Explanation Answer: D) 109

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Filed Under: Problems on Numbers
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Q:

An angle in a semicircle is

A) 45° B) 60°
C) 90° D) 120°
 
Answer & Explanation Answer: C) 90°

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