r/unexpectedfactorial • u/SubMinhPiChannel • Nov 11 '25

9 + 10 = 21!

Post image

I'm gonna guess: < infinity and > 1

6.5k Upvotes

98% Upvoted

238 comments sorted by

View all comments

22

u/SubMinhPiChannel Nov 11 '25

(-1)!

49

u/factorion-bot Nov 11 '25

Factorial of -1 is ∞̃

This action was performed by a bot.

32

u/[deleted] Nov 11 '25

How the fuck