Aptitude and Reasoning Questions

Q:

The mean of distribution is 11 and the standard deviation is 5. What is the value of the coefficient variation?

A) 45.45% B) 35.35%
C) 25.25% D) 55.55%
 
Answer & Explanation Answer: A) 45.45%

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Q:

Present ages of Sai and Satheesh are in the ratio of 5:4 respectively. Three years hence, the ratio of their ages will become 11:9 respectively. What is Satheesh's present age in years?

A) 21 B) 24
C) 22 D) 23
 
Answer & Explanation Answer: B) 24

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Filed Under: Problems on Ages
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Q:

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the

A) 15 – 45 B) 11 – 33
C) 15 – 55 D) 19 – 57
 
Answer & Explanation Answer: C) 15 – 55

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Filed Under: Odd Man Out
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Q:

Two trains start moving from stations S and R. Both trains move towards each other at speeds of 35 km/hr and 42 km/hr respectively. When they meet each other, the second train has travelled 90 km more than the first. What is the distance (in km) between S and R?

 

A) 450 B) 990
C) 540 D) 1040
 
Answer & Explanation Answer: B) 990

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Filed Under: Problems on Trains
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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 242 B) 431
C) 260 D) 531
 
Answer & Explanation Answer: D) 531

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Filed Under: Odd Man Out
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Q:

2sin[(C+D)/2].cos[(C­-D)/2] is equal to

A) sinC ­-  sinD B) cosC + cosD
C) cosC -­ cosD D) sinC + sinD
 
Answer & Explanation Answer: D) sinC + sinD

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Filed Under: Simplification
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Q:

A thief is stopped by a policeman from a distance of 350 metres. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief as 7 km/h and that of police man as 12 km/h, how far the thief would have run, before he is over taken?

A) 490 metres B) 392 metres
C) 588 metres D) 294 metres
 
Answer & Explanation Answer: A) 490 metres

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Filed Under: Time and Distance
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Q:

If (cosecA -­ 1)/(cosecA + 1) = x, then the value of x is

A) (sinA/(1 + cosA))2 B) cosA/(1 + sinA)
C) (cosA/(1 + sinA))2 D) sinA/(1 + cosA)
 
Answer & Explanation Answer: C) (cosA/(1 + sinA))2

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Filed Under: Simplification
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