Number Series Questions

Q:

Find the wrong number from the following series ?
7   18   40   106   183   282   403

A) 18 B) 183
C) 40 D) 106
 
Answer & Explanation Answer: C) 40

Explanation:

The given series follows the rule,
+(11x1), +(11x3), +(11x5), +(11x7), +(11x9),....

So starting from 7, 7 + 11 = 18, 18 + 33 = 51, 51 + 55 = 106, ...
So wrong number is 40 which is to be 51.

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9 5393
Q:

What will come in place of the question mark (?) in the given question?

120 % of 750 ÷ 25 - 16 = ? % of 1240 ÷ 31

A) 25 B) 30
C) 20 D) 45
 
Answer & Explanation Answer:

Explanation:

120 % of 750 ÷ 25 - 16 = ? % of 1240 ÷ 31 ? = 50

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0 5370
Q:

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

 

15, 7.5, 7.5, ?, 22.5, 56.25

 

A) 10.25 B) 11.25  
C) 11 D) 12.5
 
Answer & Explanation Answer: B) 11.25  

Explanation:
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6 5352
Q:

11M13, 13Q17, ? , 17V22 , 19W23

A) 15U21 B) 15R18
C) 15S19 D) 15T20
 
Answer & Explanation Answer: D) 15T20

Explanation:

In the given series

 

1st term has odd number starting from 11, So the Series is 11, 13, 15, 17, 19 

 

2nd term has an alphabet follwed by its alpha numeric number in the order +4, +3, +2, +1. So  the Series is M13, Q17, T20, V22, W23

 

Therefore, 15T20 is the answer.

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8 5167
Q:

Which number comes next in the series?

1, 5, 2, 6, 3, 7, ?

A) 6 B) 5
C) 4 D) 3
 
Answer & Explanation Answer: C) 4

Explanation:
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0 4981
Q:

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

63, 56, 50, 43, 37, 30, ?

A) 23 B) 24
C) 29 D) 21
 
Answer & Explanation Answer: B) 24

Explanation:
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0 4975
Q:

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. 3F, 6G, 11I, 18L, ?

A) 27Q B) 27P
C) 25N D) 21O
 
Answer & Explanation Answer: B) 27P

Explanation:

The letters move 1, 2, 3, ... steps forward.
The numbers increase by + 3, + 5, + 7, + 9....

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9 4930
Q:

In following question, a number series is given with one term missing. Choose the correct alternative for these sequence.

24, 60, 120, 210, ?

A) 336 B) 330
C) 300 D) 370
 
Answer & Explanation Answer: A) 336

Explanation:


3 x 3 x 3 = 27 - 3 = 24

4 x 4 x 4 = 64 - 4 = 60

5 x 5 x 5 = 125 - 5 = 120

6 x 6 x 6 = 216 - 6 = 210

7 x 7 x 7 = 343 - 7 = 336

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