**Q. 2-Part Questions!
(a) How many different three-letter initials can people have?
(b) How many different three-letter initials with none of the letters repeated can
people have?**

# Category: Discrete (Counting)

# Ball & Bins

**Q: We have k distinct balls and n distinct bins. We want to distribute the balls among the bins. How many distributions are possible if there is no bound on the number of balls in each bin? Assume that all balls are distributed among the bins.**