If any three successive coefficients in the expansion of $\displaystyle (1+x)^n$ are 36, 84 and 126. find n
I dont know how to begin this problem should i do a series of what ???
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If any three successive coefficients in the expansion of $\displaystyle (1+x)^n$ are 36, 84 and 126. find n
I dont know how to begin this problem should i do a series of what ???