- #1

- 55

- 9

So can someone explain to me how, (0! + 0! + 0! + 0!)! = 24Using “Only Four” ZEROS (0) and any Mathematical Operations/Symbols, to obtain the number 24.

Im sure this is simple to most of you but i am very slow when it comes to maths.

- Thread starter Andy
- Start date

- #1

- 55

- 9

So can someone explain to me how, (0! + 0! + 0! + 0!)! = 24Using “Only Four” ZEROS (0) and any Mathematical Operations/Symbols, to obtain the number 24.

Im sure this is simple to most of you but i am very slow when it comes to maths.

- #2

- #3

- 7

- 0

4! = 4 x 3 x 2 x 1 = 24

0! = 0 x -1 x -2 x -3 ~ = 1

huh? :)

- #4

- 515

- 1

you can think of it like this:

n! = (n-1)!*n

so:

3! = 2!*3

2! = 1!*2

1! = 0!*1 => 0! = 1

also there is no factorial for negative or not-integer numbers (at least I think...)

- #5

- 515

- 1

well it seems there is possible to define factorial for complex numbers:

factorial from mathworld

factorial from mathworld

- #6

- 7

- 0

thanks guybrush, that cleared things up.

- #7

- 55

- 9

Thank you.

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