Find the coefficient of `a^3b^4c` in the expansion of `(1+a-b+c)^9dot`

coefficient of a^(3)b^(2)c in the expansion of (1+a-b+c)^(9)

The coefficient of a^(3)b^(2)c in the expansion of (1+a-b+c)^(9) is

Find the coefficient of x^2 y^3 z^4 in the expansion of (ax -by +cx)^9 (b) a^2 b^3 c^4 d in the expansion of (a -b-c +d)^10

Find the coefficient of a^(2)b^(3)c^(4)d in the expansion of (a-b-c+d)^(10) .

Find the coefficient of a^(3)b^(4)c^(5) in the expansion of (bc+ca+ab)^(6)

Statement-1: The coefficient of a^(3)b^(4)c^(3) in the expansion of (a-b+c)^(10) is (10!)/(3!4!3!) Statement-2: The coefficient of x^(p)y^(p)z^(r) in the expansion of (x+y+z)^(n) is (n!)/(p!q!r!) for all integer n.

The coefficient of a^4b^5 in the expansion of (a+b)^9 is ______.

Coefficient of a^3b^4c^5 in expansion of (bc+ca+ab)^6

Find the coefficients of x^(6) in the expansion of (ax^(2) + bx + c)^(9)