A1/4B1/2C1/8D1/12Answer: B. 1/2 Read Explanation: 64(−13)×8(23)×27(13)×36(−12)64^{(\frac{-1}{3})}\times 8^{(\frac23)}\times27^{(\frac13)}\times36^{(\frac{-1}{2})}64(3−1)×8(32)×27(31)×36(2−1) =4−1×22×3×6−1=4^{-1}\times2^2\times3\times 6^{-1}=4−1×22×3×6−1 =14×4×3×16=\frac14\times4\times3\times\frac16=41×4×3×61 =12=\frac12=21 Read more in App