Classical

Number Series - Number series MCQ

11:  

17,44,62,53 ......

A.

66

B.

26

C.

29

D.

63

 
 

Option: B

Explanation :

The total of unit + tens of every member is equal to eight, i.e., 1 + 7 = 8, 4 + 4 = 8, 2 + 6 = 8

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Salam Rahal said: (11:06am on Sunday 5th February 2017)
The missing number should be less than the first multiple of 9 that follws. Therefore 26 is the missing number since it is less by 1 from the first multiple of 9 which follows. A more intelligent way of looking at it.
Salam Rahal said: (11:10am on Sunday 5th February 2017)
The missing number should be less by one from the first multiple of 9 which immediately follows. Hence 26 satisfies this rule here.

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12:  

5,3,6,2,7,1,.....

A.

2

B.

3

C.

4

D.

8

 
 

Option: D

Explanation :

There are two series 5, 6, 7, 8 and 3, 2, 1,0

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13:  

1,2,3,1,4,9,1,...27

A.

5

B.

4

C.

16

D.

8

 
 

Option: D

Explanation :

1,2,3,12,22,32,13,23,33

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14:  

81 ,9,64 ,8,.....,12

A.

97

B.

144

C.

96

D.

100

 
 

Option: B

Explanation :

First is the square of the second in every pair such as
(9)2=81,(8)2=64 and (12)2=144

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15:  

2,6,12,20,30

A.

40

B.

44

C.

42

D.

36

 
 

Option: C

Explanation :

The difference between two consecutive numbers are increasing in the order of 4, 6, 8, 10 and 12

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