Answer
(a) 4
(b) 2
(c) 1/2
Work Step by Step
(a) $\sqrt{16}=\sqrt{4^2}=4$
(b) $\sqrt[4]{16}=\sqrt[4]{2^{4}}=2$
(c) $\displaystyle \sqrt[4]{\frac{1}{16}}=\sqrt[4]{(\frac{1}{2})^{4}}=\frac{1}{2}$
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