Aptitude and Reasoning Questions

Q:

Complete the following with an appropriate option

 

529 : 441 :: 961 : ___

 

A) 814 B) 841
C) 822 D) 835
 
Answer & Explanation Answer: B) 841

Explanation:
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Q:

A and  B can do  a piece of work in 30 days , while  B and C can do the same work in 24 days and C and A in 20 days . They all work together for 10 days when B and C leave. How many days more will A take to finish  the work?

A) 18 days B) 24 days
C) 30 days D) 36 days
 
Answer & Explanation Answer: A) 18 days

Explanation:

2(A+B+C)'s 1 day work = 1/30 + 1/24 + 1/20 = 1/8

=>(A+B+C)'s  1 day's work= 1/16

work done by A,B and C in 10 days=10/16 = 5/8

Remaining work= 3/8

A's 1 day's work= 116-124=148

Now, 1/48 work is done by A in 1 day.

 So, 3/8 work  wil be done by A in =48 x (3/8) = 18 days

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Filed Under: Time and Work

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Q:

Average of 10 numbers is 14. If each number is multiplied by 6, then what will be the new average?

 

A) 70 B) 84
C) 56 D) 92
 
Answer & Explanation Answer: B) 84

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Q:

The angle between the minute hand and the hour hand of a clock when the time is 8:30  

A) 80 Degrees B) 75 Degrees
C) 60 Degrees D) 105 Degrees
 
Answer & Explanation Answer: B) 75 Degrees

Explanation:

Angle traced by hour hand in 17/2 hrs = 36012×172o = 255 

 

Angle traced by min hand in 30 min = 36060×30o = 180 

 

Therefore,  Required angle = (255 - 180) = 75o

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Q:

Select the related number from the given alternatives.

12.5 : 6.25 :: 7 : ?

A) 3.5 B) 3.25
C) 6.5 D) 12
 
Answer & Explanation Answer: A) 3.5

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Q:

Calculate the area (in sq.cm) of a circle whose diameter is 35 cm.

 

A) 1925 B) 962.5
C) 857.5 D) 1715
 
Answer & Explanation Answer: B) 962.5

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Filed Under: Area
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Q:

Based on the analogy given, find the missing pair from the given options.

 

5 : 35 : ___ : ____

 

 

A) 11 : 55 B) 7 : 77
C) 3 : 24 D) 9 : 45
 
Answer & Explanation Answer: B) 7 : 77

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Q:

Select the related word/letters/number from the given alternatives.

Eccrinology : Secretions :: Cardiology : ?

 

A) Insects B) Soil
C) Algae D) Heart
 
Answer & Explanation Answer: D) Heart

Explanation:
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