" The coefficient of "x^(15)" in the product of "(1-x)(1-2x)(1-2^(2)x).......(1-2^(15)x)" is equal to "

The coefficient of x^(15) in the product of (1-x)(1-2x)(1-2^(2)x)(1-2^(3)x)(1-2^(4)x)......(1-2^(15)x)

The coefficient of x^15 in the product (1-x)(1-2x) (1-2^2 x) (1-2^3 x) …. (1-2^15 x) is :

The coefficient of x^(18) in the product (1+x)(1-x)^(10)(1+x+x^(2))^(9) is

The coefficient of x^(18) in the product (1+x)(1-x)^(10)(1+x+x^(2))^(9) is

The coefficient of x^15 in the product (1-x)(1-2x) (1-2^2 x) (1-2^3 x) …. (1-2^15 x) is : (a) 2^105 - 2^121 (b) 2^121 - 2^105 (c) 2^104 - 2^120 (d) 2^108 -2^110

The coefficient of x^49 in the expansion of (x-1)(x-1/2)(x-1/2^2)........(x-1/2^49) is equal to

The coefficient of x^(10) in the expansion of (1+x)^(2)(1+x^(2))^(3)(1+x^(3))^(4) is equal to

Find the cofficient of x^(10) in the expansion of (1-2x+3x^(2))(1-x)^(15) .

The coefficient of x^(5) in the expansion of 1+(1+x)+(1+x)^(2)+……..+(1+x)^(10) is equal to

Coefficient of x^(n-2) in the product (x+1)(x+2)(x+3).........(x+n) is equal to