Binomial TheoremHard
Question
The number of terms in the expansion of 
, n ∈ N, is :
, n ∈ N, is :Options
A.2n
B.3n
C.2n + 1
D.3n + 1
Solution
= nC0 
- nC1
+ .... + nCn (-1)n Total number of terms = 2n + 1
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