If the number of terms in the expansion of `(1-2/x+4/(x^(2))) x ne 0`, is `28`, then the sum of coefficient of all the terms in this expansion, is

If the number of terms in the expansion of (1-2/x+4/(x^2))^n , x!=0, is 28, then the sum of the coefficients of all the terms in this expansion, is : (1) 64 (2) 2187 (3) 243 (4) 729

Find the number of terms in the expansion of (1-2x+x^(2))^(n) .

The number of terms in the expansion of (1-10x+25x^(2))^(20) is

The number of terms in the expansion of (2x+3y-4z)^n is

The number of terms in the expansion of (x + y + x)^(10) , is

Find the number of terms in the expansion of (1+(x^(2))/(4)-x)^(5) .

The number of terms in expansion of (9+6x+x^2)^25

The number of term in the expansion of [(2 x + 3y)^(4)]^(7) is 8

The number of terms in expansion of (x^(2)+18x+81)^(15) is

Find the middle term in the expansion of (1+2x+x^(2))^(10)