In each of the following questions three of the given four are alike in a certain way and form a group .Which is the one that does not belong to that group in the following questions ?

Options

A. 145
B. 35
C. 197
D. 65

Answer

B

Explanation

Except 35 , all others are in `X^(2)+1` pattern i.e.
`145=12^(2)+1,197=14^(2)+1,65=8^(2)+1,17=4^(2)+1`
But `35=6^(2)-1`.