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

A 2

B 4

C 8

D None

Solution

Correct Answer: Option C

দেওয়া আছে, x = y = 2z

∴ y = x

এবং z = x/2

আবার, xyz = 256
⇒ x.x. x/2 = 256
⇒ x³ = 256 × 2
⇒ x³ = 512
⇒ x³ = 8³
⇒ x = 8