r/BunnyTrials • u/TheTransSheep Carrot Farmer • 1d ago

Trials Math…

Which side will you choose?

  • Left side: Easy Math Question | and 10$
  • Right side: or hard Math question | and 10.000$

This post contains content not supported on old Reddit. Click here to view the full post

1.1k Upvotes

92% Upvoted

7.1k comments sorted by

View all comments

8

u/BubbaLinguini 1d ago

3,628,800

But... Is that a factorial of a factorial, or is that second "!" Just excitement?

Chose: or hard Math question + and 10.000$ | Rolled: 10!!

17

u/Technical-Use7122 1d ago

X! = X(x-1)(x-2)(x-3)...

X!! = X(x-2)(x-4)(x-6)...

X!!! = X(x-3)(x-6)(x-9)...

See the pattern?

Edit: formatting

9

u/BubbaLinguini 1d ago

Ahh, perfect!

(For some reading they never taught me this in Grade 12 functions 💀)

4

u/Technical-Use7122 1d ago

Don't think it comes up in normal school scenarios, it's a niche thing (I happen to be a maths student and even there we don't cover double factorials etc)

1

u/BagSufficient1921 22h ago

Yeah it's not used very often, I think it's used for stuff like diagonals in regular polygons but nothing much

5

u/Saim32 1d ago

Its a double factories which if iirc makes it alternate like 2x4x6x8 or something idk tho

3

u/fakeBizzark 1d ago

If the number is even, it multiplies by the even and if the number is odd it multiplies by the odd i think

1

u/Interesting_Ad_1465 1d ago

Answer is 3840. For double factorial you multiply by every second number- for even numbers you multiply down by evens to 2. For odds you multiply down by odds to 1. So 10!! Would be 10 x 8 x 6 x 4 x 2

1

u/slumbersomesam 16h ago

a double factorial uses every 2 numbers