WhyNot Science on Instagram: "Why 0! = 1? Eminem thinks arranging 0 balls should give 0 ways, but Trump explains that even “doing nothing” counts as one valid arrangement. That’s why 0! = 1. But when Eminem asks about half factorials, Trump reveals that a different formula — the Gamma function — is needed to handle fractional and negative factorials. ⚠️DISCLAIMER⚠️: This is not real audio/video of Eminem or Trump, and They did not actually say or sing the things you see in the video. This is an

What is 0? | 0 as a concept | Recognising 0 - BBC Bitesize