The value of 1000C50+999C49+998C48+……+950C0 is
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If the middle term in the expansion of (x2+1/x)n
then find the value of n˙
Find the following sum:
Find a, b and n in the expansion of (a+b)nif the first three terms of the expansion are 729, 7290 and 30375, respectively.
Find the sum C0+3C1+32C2++3nCn˙
Find the sum of the coefficients of all the integral powers of x
in the expansion of (1+2x)40˙
Find the sum of all the coefficients in the binomial expansion of (x2+x−3)319˙
Find the sum of the coefficients in the expansion of (1+2x+3x2+nxn)2˙
In (231+3311)n if the ratio of 7th term from the beginning to the 7th term from the end is 1/6, then find the value of n˙