Question

64^-0.5 = ………………

A) -4 

B) – 8 

C) 8 

D) 1/8

Answer 1

Correct option is (D) 1/8

\(64^{-0.5}=\frac1{64^{0.5}}=\frac1{(2^6)^\frac12}\) \(=\frac1{2^{6\times\frac12}}=\frac1{2^3}=\frac18\)

Answer 2

Correct option is  D) 1/8