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What is the sum of all the coefficients in the expansion of `(1+x)^(n)` ?A. `2^(n)`B. `2^(n)-1`C. `2^(n)-1`D. `2(n-1)`

Answer» Correct Answer - A
Given expansion is `(1 + x)^(n)`.
Put x = 1, we get
Required sum = `(1 + 1)^(n)=2^(n)`


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