Question

find the odd man out 1 4 9 16 25​

Answer 1

none of them is odd one out

Answer 2

There is nothing odd in this series.. you can find pattern in this series like..

Find the difference between consecutive squares:

1 to 4 = 3

4 to 9 = 5

9 to 16 = 7

16 to 25 = 9

25 to 36 = 11

…

The odd numbers are sandwiched between the squares.

Or maybe there is a number missing in your question which may be the odd number!!