Binomial Theorem Part 1

Section: Mathematics
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Question : 43 of 100
 
Marks: +1, -0
If the sum of the coefficients of all even powers of x in the product
(1+x+x2+...+x2n) (1−x+x2−x3+...+x2n) is 61, then n is equal to _________.
[7-Jan-2020 Shift 1]
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