Which of the following can be a perfect square?

The correct answer is: A number ending with even number of zeros

So as we know that perfect squares are sums that are the products of integers multiplied by themselves. We have given four statements, we will justify each sentence with an example and find which one is the correct one.
Statement 1: A number ending with odd number of zeros:

So from this example, we can see that there is no perfect square number that has odd number of zeroes at the end. So this statement is false.
Statement 2: A number ending in 3 or 7:

So from this example, we can see that there is no perfect square number that ends with 3 or 7 at the end. So this statement is false.
Statement 3: A number ending with even number of zeros:


So from this example, we can see that there are perfect squares, that have an even number of zeros at the end. So this statement is true.
 Statement 4: A number ending in 2:


So from this example, we can see that there is no perfect square number that ends with 2 at the end. So this statement is false.
 So from the above four statements, we can see that the third statement, which is A number ending with even number of zeros is true.
 

In this question, we were given 4 statements where we used the concept of a perfect square. Out of all the statements we found that a correct statement is an A number ending with an even number of zeros.