Question

The number of terms in the expansion of $(1+x{)}^{21}$ is

• A. $20$
• B. $21$
• C. $22$
• D. $24$

Answer 1

The correct option is C $22$

The number of terms in the binomial expansion is one more than power $n$ i.e., $n+1$
So, here $n=21$
The number of terms in the expansion $(1+x{)}^{21}=21+1=22$.