threelonmusketeers@sh.itjust.works to

Unexpected Factorial@sopuli.xyzEnglish · 2 months ago

51 is divisible by 3!

sh.itjust.works

7

101

51 is divisible by 3!

sh.itjust.works

threelonmusketeers@sh.itjust.works to

Unexpected Factorial@sopuli.xyzEnglish · 2 months ago

7

Source: https://lemmy.blahaj.zone/comment/10788469

Chat

southsamurai@sh.itjust.works
link
fedilink
English
arrow-up
7
arrow-down
1·
2 months ago
Pfft, amateur hour. I count to eleven without taking my shoes off all the time.

Just not at my kid’s school any more.

Unexpected Factorial@sopuli.xyz

unexpectedfactorial@sopuli.xyz

You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]

When you use an exclamation mark with a number, you’re actually implying it’s not a normal number any more. It’s a factorial!

Ok, so how does this work?

5!=1×2×3×4×5=120

6!=720

These numbers get really large. For example:

15!≈1.3×10^12

So, next time you see a headline with 2000! in it, you’ll know what to expect.

There are also double factorials (n!!) and iterated factorials (n!)!, and they aren’t the same thing. Just add more exclamation marks and you get multifactorial. Check wikipedia to see how spicy it gets.

Visibility: Public

This community can be federated to other instances and be posted/commented in by their users.

4 users / day
86 users / week
89 users / month
272 users / 6 months
1 local subscriber
123 subscribers
9 Posts
33 Comments
Modlog

mods:
Hamartiogonic@sopuli.xyz