If x = y = 2z and xyz = 256 then...

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If x = y = 2z and xyz = 256, then x = ?

A. 2

B. 4

C. 8

D. None of these

Answer: Option C

Solution(By Examveda Team)

xyz = 256 ⇒ (2z) (2z) z = 256 ⇒ 4z³
= 256 ⇒ z³ = 64 ⇒ z = 4
∴ x = 2z = (2 × 4) = 8

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