Q111
If x = y = 2z and xyz = 256, then x = ?
A.
2
B.
4
C.
8
AnswerD.
None of these
Answer: Option C
Solution
Answer: Option C
Solution:
xyz = 256 ⇒ (2z) (2z) z = 256 ⇒ 4z3= 256 ⇒ z3 = 64 ⇒ z = 4
∴ x = 2z = (2 × 4) = 8