Question

Which of the following is/are surd (s) ?

1) $\sqrt[5]{517}$

2) $\sqrt[3]{329}$

3) $\sqrt{16}$

4) $\sqrt{5}$

• A.
  1 and 2
• B.
  Only 2
• C.
  1, 2 and 4
• D.
  3 and 4

Answer 1

The correct option is C

1, 2 and 4
$\sqrt[5]{517}=(17{)}^{1/5}\to Surd\sqrt[3]{329}=(29{)}^{1/3}\to Surd\sqrt{16}=(16{)}^{1/2}=(4^2{)}^{1/2}=4\to \text{Not a Surd}\sqrt{5}=5^{1/2}\to Surd$

Hence, the right answer is Option C.