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

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

The coefficient of y^(7) in the expansion of (y+z)^(7) 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

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

The coeficient of (x^(7)y^(3)) in the expansion of (x-y)^(10)- the coefficient of (x^(3)y^(7)) in the expansion of (x-y)^(10) is ………

The sum of the coefficients in the expansion of (a x^(2)-2 x+1)^(35) is equal to sum of the coefficients in the expansion of (x-a y)^(35) , then a=

The coefficient of x^(8)y^(12) in the expansion of (2x+3y)^(20) is