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Find the missing term 6 13 25 51 101

This question belongs to Competitive Reasoning Number Series Completion
Number Series Completion
?

Find the missing term: 6, 13, 25, 51, 101. ?

Answer & Solution
Correct Answer: Option C
The pattern is x2+1,x2-1,x2+1,x2-1.x...................
So, missing term =101x2+1=203
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1 Comment
Helping Hands
Helping Hands 6 years ago
This can also be done through another way
There are two series
One of 6,25,101
Another is 13,51,?
6×4+1=25, 25×4+1=101
13×4-1=51,51×4-1=203
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