The coefficient of in expansion of is
As we learnt in
Binomial Coefficients in Binomial Expansion -
In the expansion of , Binomial Coefficients are
- wherein
is +ve .
Coefficient of xn in (1 + x) (1 - x)n
Correct option is 2.
Option 1)
This is an incorrect option.
Option 2)
This is the correct option.
Option 3)
This is an incorrect option.
Option 4)
This is an incorrect option.
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