Question

Which one of the following is not a surd?

• A. $\sqrt[3]{38}$
• B. $\sqrt[3]{330}$
• C. $\sqrt[5]{54}$
• D. $\sqrt[8]{83}$

Answer 1

The correct option is A $\sqrt[3]{38}$

$2^3=8$

$\Rightarrow \sqrt[3]{38}=2$ which is a rational number, hence, not a surd.