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Questions  

The sum of the coefficients of even powers of x in the expansion of 1+x+x2+x35is

a
510
b
512
c
521
d
522

detailed solution

Correct option is B

Sum of the coefficients of odd powers of x in f(x) is f(1)−f(−1)2=(1+1+1)5−(1+1+1)52=452=512

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