Sum of Binomial Coefficients of Odd Numbered Terms
In the expans...
Question
In the expansion of (1+x)70, the sum of coefficients of odd powers of x is
A
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B
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C
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D
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Solution
The correct option is B Fact. The sum of the coefficients of odd powers in the expansion of (1+x)n =sum of the coefficients of even powers in (1+x)n =2n−1 270−1=269