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The middle term in the expansion of is.

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If the coefficients of the term and the term in the expansion of are equal, then the value of n is

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If the coefficients of 2^nd, 3^rd and 4^th terms in the expansion of are in A.P., then n =

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If r^th term is the middle term in the expansion of , then term is

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The number of terms with integral coefficients in the expansion of is