Question

The Square of which of the following would be odd number 144 , 400 ,64,49​

Answer 1

Answer:

49

try squaring the last digit of the given numbers.......

so.....144 x 144 =>

4 x 4 = 16 (even).

400 x 400 =>

0 x 0 = 0 (even).

64 x 64 =>

4 x 4 = 16 (even).

49 x 49 =>

9 x 9 = 81 (odd).