Question Details

What should come in place of the question mark (?) in the given series?
61 85 109 133 157 ?

Options

A

179

B

183

C

181

D

185

Show Answer

Correct Answer :

Option C

181

Solution :

The correct answer is 181.


To find the missing number in the given series, let us analyze the pattern or difference between consecutive terms:

85-61=24

109-85=24

133-109=24

157-133=24


We can see that the sequence is an arithmetic progression with a constant common difference of 24.


To obtain the next number in the series replacing the question mark (?), we add 24 to the last term (157):

?=157+24=181


Hence, the number that should come in place of the question mark is 181.

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