this post was submitted on 02 Mar 2026
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Science Memes

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top 28 comments
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[–] NeatNit@discuss.tchncs.de 90 points 2 months ago (1 children)

Fine, I'll do the math:

60 seconds in a minute (10 × 6)

60 minutes in an hour (9 × 5 × 4 / 3)

24 hours in a day (8 × 3)

7 days in a week (7)

6 weeks (3 × 2)

The bold 3's cancel out and become × 1, and then it's easy to see each integer from 1 to 10 appears exactly once when it's all multiplied together.

[–] Xavienth@lemmygrad.ml 5 points 2 months ago

Much easier to start if you know there are 3600 seconds in an hour. 36 is 9×4 and 100 is 10×5×2. Then 24 hours is 8×3, and 6 weeks gives you 6×7 (hand gesture).

[–] 87Six@lemmy.zip 43 points 2 months ago (3 children)

It took me way too long to understand the joke, I may be fucking dumb

[–] Pratai@piefed.ca 26 points 2 months ago (3 children)

I still don’t get it, so… you could be worse.

[–] TheRedSpade@lemmy.world 44 points 2 months ago (2 children)

A number followed by an exclamation point means multiplying it by each whole number below it until one.

3! = 3*2*1 = 6
5! = 5*4*3*2*1 = 120
10! = 10*9*8*7*6*5*4*3*2*1 = 3,628,800

3,628,800 seconds / 60 = 60,480 minutes
1008 hours
42 days
6 weeks

[–] wewbull@feddit.uk 6 points 2 months ago* (last edited 2 months ago)

6 Weeks * 7 days * 8 * 3 (24) hours * 2 * 4 * 5 * 9 * 10 (3600 = 60²) seconds

The last one is a bit of a jump, but 9 * 4 is 36 and 10 * 5 * 2 is 100 so together it's 3600.

[–] Pratai@piefed.ca 4 points 2 months ago
[–] bjoern_tantau@swg-empire.de 12 points 2 months ago

10! means ten factorial. So 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1.

It's a common math joke.

[–] 87Six@lemmy.zip 2 points 2 months ago

Omg brotha stay strong 💀

[–] foofiepie@lemmy.world 7 points 2 months ago

Me too. It’s even there in the title I didn’t read at first. I thought it was about them having just 10 seconds left.

[–] jerkface@lemmy.ca 6 points 2 months ago

It's not typeset correctly or it would have been obvious and ruined the joke.

[–] wonderingwanderer@sopuli.xyz 24 points 2 months ago (1 children)

Okay, but did he pronounce it as "Ten factorial"‽‽‽‽‽

[–] genfood@feddit.org 15 points 2 months ago* (last edited 2 months ago) (1 children)
[–] wonderingwanderer@sopuli.xyz 16 points 2 months ago (1 children)

It's like "there are 10 kinds of people in the world: those that can read binary, and those that can't."

It doesn't work if you say it aloud.

[–] MajorMajormajormajor@lemmy.ca 5 points 2 months ago (1 children)

Okay, I tried the joke out. I said "it" out loud to my spouse and they didn't laugh.

[–] ms_lane@lemmy.world 15 points 2 months ago
[–] Mobile@leminal.space 11 points 2 months ago

Hehe. Thanks for the chuckle.

[–] ZoDoneRightNow@kbin.earth 11 points 2 months ago (1 children)

seconds in an hour = 3600 = 10 * 9 * 8 * 5

24 hours in a day = 6 * 4

7 days in a week = 7

6 weeks = 6 = 3 * 2 * 1

[–] NeatNit@discuss.tchncs.de 7 points 2 months ago (1 children)

Aw, you beat me to it! But I formatted it better. So who wins? :P

[–] ZoDoneRightNow@kbin.earth 1 points 2 months ago (1 children)

hmm, seems my line breaks were removed...

[–] NeatNit@discuss.tchncs.de 1 points 2 months ago

Welcome to markdown

[–] panda_abyss@lemmy.ca 11 points 2 months ago

This is neat, never thought about this

[–] remon@ani.social 4 points 2 months ago (1 children)

You're missing 200 seconds.

[–] TommySoda@lemmy.world 25 points 2 months ago (1 children)

Am I missing something or just dumb? I did the math and 10! came out to 6 weeks exactly...

[–] remon@ani.social 23 points 2 months ago (2 children)

You're right, I fucked up.

[–] TommySoda@lemmy.world 17 points 2 months ago

It's okay I still love you. <3

[–] Zomg@piefed.world 13 points 2 months ago

We forgive you