Apply the Ratio Test to ∑n=1∞3nn!\sum_{n=1}^{\infty} \frac{3^n}{n!}∑n=1∞n!3n. What is limn→∞∣an+1an∣\lim_{n \to \infty} \left|\frac{a_{n+1}}{a_n}\right|limn→∞anan+1?
0
1
3
∞\infty∞