Match each series to the test that should be used to test for convergence/divergence. While it is possible that each test could apply to more than one series, in this exercise each is only used once. [infinity]
a. ∑2^n/n!
n=1

[infinity]
b. ∑n^2
n=1

[infinity]
c. ∑(-1)^n+1 (n+1)/(3n+1)
n=1

1. Alternating series.
2. Geometric series.
3. Ratio test.
4. nth term test.