यदि (1 - x + x^(2)) ^(n) = a(0) + a(1) ...

यदि `(1 - x + x^(2)) ^(n) = a_(0) + a_(1) x + a_(2) x^(2) + . . . + a_(2 n) x^(2 n)` तो `a_(0) + a_(2) + a_(4) + . . . + a_(2n)` बराबर है

A

`( 3^(n ) + 1)/( 2)`

B

`( 3^(n) - 1)/( 2)`

C

` (1 - 3^(n))/( 2)`

D

` 3^(n) + (1)/(2)`

Verified by Experts

The correct Answer is:

A

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