x^{31}⋅(1−x^{16})⋅(1−x^{15})⋅(1−x^{26})⋅$\frac{1}{(1-x)^{3}}$
find the coefficient of x^{52 ??}
Do you understand the second solution here http://math.stackexchange.com/questions/305328/finding-coefficient-of-generating-function Its the same problem.
aa
ans is 204
https://gateoverflow.in//85604/generalized-permutation-and-combination( see the note for more clearification )
@sonam,and one more thing,as far as i know,genral term according to binomial formula in (1-x)^{n }= ^{n+r-1}C _{r} but here (1-x)^{n} is in denominator..so why have u not taken minus??
please help me :-(