Question

A number ending with
and
never a perfect square​

Answer 1

Can you please elaborate more ?

Answer 2

Answer:

2, 3, 7 & 8.

Explaination:

The numbers that end with 2, 3, 7 or 8 will never be the result of the product of the same numbers (will never be a perfect square).

Example:

22: Ends with 2. 4^2=16 and 5^2=25. No natural number has a square as 22.

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