Question

Among the given options, which of them can be a perfect square number?

• A. $12345687$
• B. $546764689$
• C. $145678233$
• D. $345678918$

Answer 1

The correct option is B $546764689$

We know that numbers which have $3$, $7$ and $8$ at their unit place can never be the square of any number. Hence, the numbers $12345687$, $145678233$, and $345678918$ can never be square numbers. Moreover, $546764689$ is a perfect square number and its square root is $23383$.