which is the value not equal to 1.125 ?

In the following option, the number which is not a perfect square is :

In a class of 60 students 55% are boys. The number of girls in the class is :

4, 9, 25, 49, 121, 169, ................

The three-fifth of a number is 40 more than the 40 percent of the same number. The number is :