Which one of the following can’t be the square of a natural number? , Which one of the following can’t be the square of a natural number?

A. 42437

B. 20164

C. 81225

D. 32761

Correct Answer :

A. 42437

Explanation

We know that the square of a natural number never ends in 2, 3, 7 and 8.

∴ 42437 can’t be the square of a natural number.