Which series is a test case for the Alternating Series Test?
∑1n2\sum \frac{1}{n^2}∑n21
∑(−1)nn\sum \frac{(-1)^n}{n}∑n(−1)n
∑nn+1\sum \frac{n}{n+1}∑n+1n
∑1n!\sum \frac{1}{n!}∑n!1