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

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

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

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

If the number of terms in the expansion (1+2x-3y+4z)^(n) is 286 , then find the coefficient of term containing xyz .