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Can someone explain detailedly to me how to solve this:
In the expansion of (1 + x)^n , the coefficient of x^5 is the arithmetic mean of the coefficients of x^4 and x^6 . Calculate the possible values of n.
In the expansion of (1 + x)^n , the coefficient of x^5 is the arithmetic mean of the coefficients of x^4 and x^6 . Calculate the possible values of n.