Home
Class 11
MATHS
The coefficient of x^5 is the following ...

The coefficient of x^5 is the following expansion of `(1 + x)^21 + (1 + x)^22 +....+ (1 + x)^30` is

A

a) `^(51)C_9`

B

b) `^(9)C_5`

C

c) `^(31)C_6 - ^(21)C_6`

D

d) `^(30)C_5 + ^(20)C_5`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Find the coefficient of x^9 in the expansion of (1/x + x^2)^18

Find the coefficient of x^6 in the expansion of (1/x^2 + x^4)^18

Find the coefficient of x^-3 in the expansion of (x -1/(2x))^5

Find the coefficient of x^7 in the expansion of (1 - x^4) (1 + x)^9

Find the coefficient of x^4 in the expansion of (x^2 - (2/x))^8

Find the coefficient of x in the expansion of (1 - 3x + 7 xx 2) (1 - x) 16

The coefficient of the 8th term in the expansion of (1 + x)^10 is ...

Find the coefficient of x^7 in the expansion of (x^(2) +1/x)^(11)