Question

what is the greatest odd square number less than 150

Answer 1

The square of 11 is answer of your question. 121 is the square of 11.

Answer 2

hey buddy!!
Only odd numbers have odd squares.
So the square of 11 is the greatest odd number less than 150.
Because 11^2=121
when you move to next odd number,13 the square becomes 169, which exceeds the limit.

So the ans is 11.

HOPE IT HELPS....