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The middle term in the expansion of (1-3...

The middle term in the expansion of `(1-3x +3x^2 -x^3)^6` is

A

`.^(18)C_(10)x^(10)`

B

`.^(18)C_(9)(-x)^(9)`

C

`.^(18)C_(9)x^(9)`

D

`-.^(18)C_(10)x^(10)`

Text Solution

Verified by Experts

The correct Answer is:
B
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