Class 11MathematicsBinomial TheoremGeneral term, Coefficient of any power of x, Independent term, Middle term and Greatest term and Greatest coefficient
MediumThe $r^{th}$ term in the expansion of $(a + 2x)^n$ is
- A$\frac{n(n + 1)...(n - r + 1)}{r!} a^{n - r + 1} (2x)^r$
- B$\frac{n(n - 1)...(n - r + 2)}{(r - 1)!} a^{n - r + 1} (2x)^{r - 1}$
- C$\frac{n(n + 1)...(n - r)}{(r + 1)!} a^{n - r} (x)^r$
- DNone of these
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