discrete math

[warm abyss]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with: ```diff
   +close

[tired briar]

why'd you put in 0

[fallen ginkgo]

idk

what do I put there?

[tired briar]

since those factorials cancel you're just left with (n+1)(n)(n-1)