Aptitude and Reasoning Questions

Q:

Which of the following terms follows the trend of the given list?

 

BAAAAAAB, ABAAAAAB, AABAAAAB, AAABAAAB, AAAABAAB, _______________.

 

A) AAAAABAB   B) AAAAAABB  
C) BAAAAAAB   D) ABAAAAAB
 
Answer & Explanation Answer: A) AAAAABAB  

Explanation:
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Q:

Find the wrong number in the series

7, 28, 63, 124, 215, 342, 511

A) 28 B) 124
C) 215 D) 342
 
Answer & Explanation Answer: A) 28

Explanation:

Here the number follows the given rule 

 23-1, 33-1, 43-1, 53-1, ...

 

But 28 has been given in problem series.

 

so 28 is wrong number.

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Q:

What is the value of (1/√3 - sin45)?

 

A) 1/2√3   B) (√2-√3)/√6  
C) 1-√2   D) (4-√3)/2
 
Answer & Explanation Answer: B) (√2-√3)/√6  

Explanation:
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Filed Under: Simplification
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Q:

Select the related number from the given alternatives.

2.25 : 13/4 :: 3.75 : ?

A) 17/4 B) 19/4
C) 15/4 D) 11/4
 
Answer & Explanation Answer: B) 19/4

Explanation:
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Filed Under: Analogy
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Q:

Suppose 0 < θ < 90, then for every θ 4 sin2 θ + 1 is greater than or equal to ?

 

A) 2 B) 4 sin θ 
C) 4 cos θ  D) 4 tan θ
 
Answer & Explanation Answer: B) 4 sin θ 

Explanation:
We know that,
Arithmetic mean ≥ Geometric mean
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Filed Under: Simplification
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Q:

39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?

A) 10 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: B) 13

Explanation:

Let the required number of days be x.

Less persons, More days (Indirect Proportion)

More working hours per day, Less days (Indirect Proportion)

Persons30:39Working hours/day6:5 12:x

 

=> 30 * 6 * x = 39 * 5 * 12 

 

=> x= 13

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Filed Under: Chain Rule

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Q:

1, 2, 3, 10, ?, 9802

A) 99 B) 199
C) 299 D) 999
 
Answer & Explanation Answer: A) 99

Explanation:

2 = 12 + 13 = 22 - 110 = 32 + 1Now 102 - 1 = 999802 = 992 + 1

 

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Filed Under: Number Series
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841 57352
Q:

Find the odd man out of the following number sequence?

100, 101, 97, 105, 90

A) 90 B) 105
C) 97 D) 101
 
Answer & Explanation Answer: B) 105

Explanation:

The given number series 100, 101, 97, 105, 90

100

100 + 1^2 = 101

101 - 2^2 = 97

97 + 3^2 = 106 ( not 105)

106 - 4^2 = 90

 

Hence, the odd man in the given series is 105.

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Filed Under: Odd Man Out
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