Aptitude and Reasoning Questions

Q:

Find the next number in the given sequence?

1, 2, 6, 21, 88, ?

A) 445 B) 364
C) 296 D) 194
 
Answer & Explanation Answer: A) 445

Explanation:

The given series is 1, 2, 6, 21, 88, ?

1

1 x 1 + 1 = 2

2 x 2 + 2 = 6

6 x 3 + 3 = 21

21 x 4 + 4 = 88

88 x 5 + 5 = 445

 

Hence, the next number in the given number sequence is 445.

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29 65664
Q:

In the following question, select the missing number from the given series.

 

13, 22, 66, ?, 225, 234, 702, 711

 

A) 65 B) 75
C) 80 D) 70
 
Answer & Explanation Answer: B) 75

Explanation:
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Q:

Correct expression of 0.12636¯ = ?

 

A) 139/1100 B) 126 361000
C) 1392200 D) 1263610000
 
Answer & Explanation Answer: A) 139/1100

Explanation:
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Q:

What is the area of this trapezoidal garden? (All measurements are in cm)

 

A) 60 sq.cm B) 180 sq.cm
C) 210 sq.cm D) 240 sq.cm
 
Answer & Explanation Answer: D) 240 sq.cm

Explanation:
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Q:

A committee of 5 persons is to be formed from 6 men and 4 women. In how many ways can this be done when at least 2 women are included ?

A) 196 B) 186
C) 190 D) 200
 
Answer & Explanation Answer: B) 186

Explanation:

When at least 2 women are included.

 

The committee may consist of 3 women, 2 men : It can be done in  4C3*6C2  ways

 

or, 4 women, 1 man : It can be done in  4C4*6C1ways

 

or, 2 women, 3 men : It can be done in 4C2*6C3 ways.

 

Total number of ways of forming the committees

 

4C2*6C3+4C3*6C2+4C4*6C1

 

= 6 x 20 + 4 x 15 + 1x 6

 

= 120 + 60 + 6 =186

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Q:

Which of the following combination of sides results in the formation of obtuse angled triangle?

 

A) 6,7,13   B)  5, 6, 8  
C)  4, 5, 6   D)  None of these
 
Answer & Explanation Answer: B)  5, 6, 8  

Explanation:
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Q:

Relation Between Efficiency and Time

A is twice as good a workman as B and is therefore able to finish a piece of work in 30 days less than B.In how many days they can complee the whole work; working together?

Answer

Ratio of times taken by A and B = 1 : 2.


The time difference is (2 - 1) 1 day while B take 2 days and A takes 1 day.


If difference of time is 1 day, B takes 2 days.


If difference of time is 30 days, B takes 2 x 30 = 60 days.


So, A takes 30 days to do the work.


 


A's 1 day's work = 1/30


B's 1 day's work = 1/60


(A + B)'s 1 day's work = 1/30 + 1/60 = 1/20


A and B together can do the work in 20 days.

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Subject: Time and Work

255 65366
Q:

If 3=1.732, then what is the value of (3 - 103 + 27) ?

 

A) 1.154   B)  1.577  
C)  1.464   D) 2.358
 
Answer & Explanation Answer: A) 1.154  

Explanation:
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