defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Binomial Theorem Special Terms of Binomial Expansion
nth term from the end of the expansion of\(\rm (2x - \frac {x} {2})^n\)
1
\(\rm - nx^n.2^{(n - 1)}\)
2
\(\rm nx^n.2^{(n - 1)}\)
3
\(\rm - nx^n.2^{(n - 2)}\)
4
\(\rm nx^n.2^{(n - 2)}\)