Quantitative Aptitude - Arithmetic Ability Questions

Q:

Find the circumference (in cm) of a circle of radius 17.5 cm.

A) 140 B) 110
C) 38 D) 76
 
Answer & Explanation Answer: B) 110

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Q:

If (a+1a)2=3, then the value of a6-1a6 will be

A) 1 B) 3
C) 0 D) 2
 
Answer & Explanation Answer: C) 0

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Q:

What is the simplified value of (cosec A + sin A)(cosec A – sin A)?

A) cos2A + cot2A B) 2 cos2A
C) 2 cot2A D) 2 cos A cot A
 
Answer & Explanation Answer: A) cos2A + cot2A

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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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Q:

The sum of the cubes of two numbers in the ratio 3 : 4 is 5824. The sum of the numbers is:

A) 21 B) 28
C) 24 D) 14
 
Answer & Explanation Answer: B) 28

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Q:

In ΔPQR, ∠QPR = 45° and the bisectors of ∠PQR and ∠PRQ meets at O. What is the value (in degrees) of ∠QOR?

A) 107.5 B) 112.5
C) 117.5 D) 122.5
 
Answer & Explanation Answer: B) 112.5

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Q:

In triangle ABC, BAC = 90 deg and AD is perpendicular to BC. If AD = 6cm and BD = 4cm, then the length of BC is

A) 10 cm B) 12 cm
C) 13 cm D) 15 cm
 
Answer & Explanation Answer: C) 13 cm

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Q:

A 600 metres long train is running at the speed of 81 km/hr. If it crosses a platform in 40 seconds, then what is the length of the platform (in metres)?

 

A) 220 B) 300
C) 360 D) 410
 
Answer & Explanation Answer: B) 300

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