Calculus
# Limits of Sequences and Series

What value of $N$ satisfies

$\lim_{n \rightarrow \infty} \left( 1 + \frac{5} { 2n} \right) ^ {10n} = e^{N} ?$

What is the value of the limit $\lim_{n \to \infty} \frac{1}{n} \sin \frac{n}{7}\pi?$

What is $\displaystyle \lim_{n \to \infty} 2(\sqrt{n+6}\sqrt{n+10}-n)$?

Evaluate $\lim_{n\to\infty}\sin\frac{n\pi}{2}.$