The sum of the coefficients in the expansion of $(1 + x - 3 x^{2})^{171}$ is

0

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Solution

The correct option is D $- 1$
Sum of the coefficients in $(1 + x - 3 x^{2})^{171}$
$= [1 + 1 - 3 (1)^{2}]^{171}$
$= (- 1)^{171} = - 1$
Hence, option C is correct.

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