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The coefficient of (x^(3)* b^(6) * C^(8...

The coefficient of ` (x^(3)* b^(6) * C^(8) *d^(9) *e *f) ` in the expansion
of ` (a + b + c - d - e - f)^(31)` is

A

12632

B

`23110`

C

3110

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
d
Coefficient of `(a^(3) * b^(6) * c^(8) * d^(9) *e*f)` in given expansion
` = (-1)^(9) *(-1)^(1) * (-1)^(1) *(31!)/(316!8!9!1!1!)`
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