Question

when a number is with 0 its square ends with how many zeros

Answer 1

At the point when a number is with 0 then its square closures with 2 zeros. Square of 5 is 25. '

When you include one 0 after 5 ie. 50 the square has two zeros ie. 2500. So for 500 ie.

Two zeros after 5 its square ought to have 4 zeros and square of 500 is 250000. So the no of zeros is 4.