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Question
If x = a (b - c), y = b (c - a), z = c (a - b), then the value of $${\left( {\frac{x}{a}} \right)^3}$$ $$ + {\left( {\frac{y}{b}} \right)^3}$$ $$ + {\left( {\frac{z}{c}} \right)^3}$$ is :
Options:
A .  $$\frac{2xyz}{abc}$$
B .  $$\frac{xyz}{abc}$$
C .  0
D .  $$\frac{3xyz}{abc}$$
Answer: Option D

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