Q. If $x + y + z = 0$ and $\frac{x ^{3} + y ^{3}}{x yz} = \frac{y ^{3} + z ^{3}}{x yz} = \frac{x ^{3} + z ^{3}}{x yz} = a$ , then which of the following can be $a$ ?

56 149 Ratio, Proportion and Variation Report Error

A

2

B

3

C

6

D

9

Solution:

Correct answer is (a) 2