Quantitative Aptitude - Arithmetic Ability Questions

Q:

If 1/√(cosec2A - 1) = x, then value of x is

A) cotA B) tanA
C) sinA D) cosA
 
Answer & Explanation Answer: B) tanA

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Filed Under: Simplification
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Q:

What is the area of the sector whose central angle is 90° and radius of the circle is 14 cm?

A) 308 sq cm B) 77 sq cm
C) 154 sq cm D) 231 sq cm
 
Answer & Explanation Answer: C) 154 sq cm

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Filed Under: Simplification
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Q:

What is the third proportional to 10 and 20?

A) 30 B) 25
C) 50 D) 40
 
Answer & Explanation Answer: D) 40

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Filed Under: Ratios and Proportions
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Q:

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?

 

A) 12 B) 20
C) 16   D) 30
 
Answer & Explanation Answer: D) 30

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Filed Under: Average
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Q:

The total surface area of a cuboid is 376 sq cm. Find its volume if its length and breadth are 10 cm and 8 cm respectively?

A) 960 cubic cms B) 240 cubic cms
C) 480 cubic cms D) 720 cubic cms
 
Answer & Explanation Answer: C) 480 cubic cms

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

In ΔABC, ∠BAC = 90° and AD is drawn perpendicular to BC. If BD = 7 cm and CD = 28 cm, then what is the length (in cm) of AD?

A) 3.5 B)  7
C) 10.5 D) 14
 
Answer & Explanation Answer: D) 14

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Filed Under: Volume and Surface Area
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Q:

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

A) 0.1 % increase B) 1 % decrease
C) 0.1 % decrease D) No changes
 
Answer & Explanation Answer: B) 1 % decrease

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Q:

If Mr. Raghav taught a total of 500 hours, then what is the difference in number of hours of teaching algebra and modern Maths?

A) 15 B) 20
C) 25 D) 40
 
Answer & Explanation Answer: C) 25

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Filed Under: Time and Work
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