Question 54

Fill in the missing number in the series:
7 , 13 , 21 , ____, 43 , 57

Name: Fill in the missing number in the series: 7 , 13 , 21 , ____, 43 , 57
Uploaded: Feb. 25, 2021, 10:44 a.m.
Duration: 57 s
Description: Fill in the missing number in the series: 7 , 13 , 21 , ____, 43 , 57

Solution

The difference between consecutive terms is in A.P.

13-7=6

21-13=8

31-21=10

43-31=12

57-43=14

$$\therefore\ $$ 31 is the answer.

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Fill in the missing number in the series:7 , 13 , 21 , ____, 43 , 57

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Fill in the missing number in the series:
7 , 13 , 21 , ____, 43 , 57