The coefficient of `y` in the expansion of `(y^(2)+1/y)^(5)` is

The coefficient of y in the expansion of (y^(2) + c//y)^(5) is

The coefficient of x^2y^3 in the expansion of (1-x+y)^(20) is (20 !)/(213 !) b. -(20 !)/(213 !) c. (20 !)/(5!2!3!) d. none of these

Write the coefficient of y in the expansion of (5−y) ^2

If the sum of the coefficient in the expansion of (alpha x^(2) - 2x + 1)^(35) is equal to the sum of the coefficient of the expansion of (x - alpha y)^(35) , then alpha =

Find the coefficient of x^(2).y^(7) in the expansion of (x+2y)^(9)

Find the coefficient of x^(2).y^(7) in the expansion of (x+2y)^(9)

Find the coefficient of x^6y^3 in the expansion of (x+2y)^9 .

Find the coefficient of x^(6).y^(3) in the expansion of (2x+y)^(9)

Find the cofficient of x^2 y^5 in the expansion of (3+2x-y)^(10)

The coefficient of x^2 y^5 z^3 in the expansion of (2x + y + 3z)^10 is