Binomial TheoremHard
Question
The coefficient of x4 in 
is
isOptions
A.
B.
C.
D.None of these
Solution
The general term in is
tr + 1 = (-1)r 10Cr
(- 1)r 10Cr
x 10-3r
Coefficients of x4, we put 10 - 3r = 4
⇒ 3r = 6 ⇒ r = 2
Coefficients of x4 in
=(-1)2. 10C2. 
istr + 1 = (-1)r 10Cr
(- 1)r 10Cr
x 10-3r Coefficients of x4, we put 10 - 3r = 4
⇒ 3r = 6 ⇒ r = 2
Coefficients of x4 in
=(-1)2. 10C2. Create a free account to view solution
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