engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Binomial Theorem Special Terms of Binomial Expansion
The middle term in the expansion of \((x^2 + \frac{1}{x^2} + 2)^n\) is
1
\(\frac{(2n)!}{(n!)^2}\)
2
\(\frac{(2n!)}{[(\frac{n}{2})!]^2}\)
3
\(\frac{n}{[(\frac{n}{2})!]^2}\)
4
\(\frac{1.2.5..(2n + 1)}{n!}2^n\)