How many zeroes are at the end of 100! ?

[@WrathofMath]

You don't wanna miss this bad boy business: ruclips.net/video/Pi8H6PCG1FM/видео.html

[@kitlith]

I feel like it's worth noting that to solve this problem, you don't need to know the exact number of factors of 2 -- you just need to know that there are more factors of 2 than there are factors of 5, and count the number of factors of 5 exactly.
That said, I feel like the explanation for finding the factors of 2 was much more understandable than the explanation for factors of 5, even if it would have been nice to be more explicit about why you're ignoring the remainder.

[@WrathofMath]

Yeah I mentioned we did not need to count all the factors of 2, but it was a good opportunity to show another way to count up the factors.

[@adoq]

100/5 = 20, 20/5 = 4 and 20+4 = 24

[@AnotherRoof]

I asked this very question to Tom of Tom Rocks Maths when we did a collab! Nice explanation 👍

[@WrathofMath]

Really? That's funny! I actually watched some of that video but don't think I saw the whole thing. You're making some good stuff, definitely have to check out more of your videos. Thanks for watching!

[@RoderickEtheria]

24. 100/5=20, 100/25=4. 20+4=24.

[@toppytoes5096]

I just want to say that tanks to you I passed Calculus 1, tsm, you have a great channel

[@WrathofMath]

Congrats on passing the course! And thank you for your kind words.

[@eyebrowse]

there are 2 zeroes at the end of 100

[@WrathofMath]

true

[@derp292]

I saw the title and thought he was just really excited about the number 100, took about 5 seconds before I realized he meant factorial 😂😂

[@WrathofMath]

😂😂