Q. The number of dissimilar terms in the expansion of $(a + b)^{n}$is $n + 1$therefore no of dissimilar terms of the expansion ${(a + b + c)}^{12}$ is
A) 13
B) 39
C) 78
D) 91
Explanation
(d)
The number of terms in$({a + b + c)}^{12}$
$= \ ^{12 + 2}C_{2} = \ ^{14}C_{2} = 91$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.