Question

can we say square numbers can only have even numbers of zero at the end
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Answer 1

Answer: The number of zeros at the end of a perfect square is always even. In other words, a number ending in an odd number of zeros is never a perfect square. Example : 2500 is a perfect square as number of zeros are 2(even) and 25000 is not a perfect square as the number of zeros are 3 (odd).

Answer 2

Answer:

2500 is the perfect square that end with zero