Question

Every natural number is a square of the other number.

Choose the correct option that best describes the above statement.

• A. $3^2+4^2=25$
• B. $(-2{)}^2+(-1{)}^2=5$
• C. $\sqrt{81}=9$
• D. None of the above

Answer 1

Answer: (C)

$\sqrt{81}=9$

If any natural number m can be expressed as $n^2$, where $n$ is also a natural number, then $m$ is a square number.

Ex. $7^2=49,8^2=64$.

There is no natural number between $7$ and $8$. So, nos. between $49$ and $64$ are not squares of any number.