Five 0s

rgoudie
Posers and Puzzles 29 Jul '04 18:18
1. 29 Jul '04 18:18
Given five zeroes, using any mathematical operations, can you make a total of 120?

-Ray.
2. royalchicken
CHAOS GHOST!!!
30 Jul '04 05:16
Originally posted by rgoudie
Given five zeroes, using any mathematical operations, can you make a total of 120?

-Ray.
(0! + 0! + 0! + 0! + 0!)!
3. 30 Jul '04 13:32
Originally posted by royalchicken
(0! + 0! + 0! + 0! + 0!)!
Excellent!

I love this puzzle.

-Ray.
4. 04 Sep '05 13:54
Can you please explain how this puzzle works?

How does that total 120?
5. ark13
Enola Straight
04 Sep '05 14:05
Originally posted by skims
Can you please explain how this puzzle works?

How does that total 120?
0! (factorial) is 1. So it's (1+1+1+1+1)! = 5! = 5*4*3*2*1 = 120
6. 04 Sep '05 14:32
How is 0! equal to 1? Can someone please explain it to me?

Thanks
7. ark13
Enola Straight
04 Sep '05 14:401 edit
Originally posted by skims
How is 0! equal to 1? Can someone please explain it to me?

Thanks
It's to make the following equation work. (x!)/(y!)=(x-y)! This works for all numbers. I'll give an example, let's say x,y=3, then it would be (3!)/(3!)=(3-3)! ---> 6/6=0! 1=1 and the equation holds since 0!=1. But if it equalled zero, like you'd expect, then the equation wouldn't work.

It's similar to how x^0=1
8. 04 Sep '05 22:44
That sounds like a botch job to me. What is the factorial of a negative number?
9. ark13
Enola Straight
04 Sep '05 23:12
Originally posted by nickhawker
That sounds like a botch job to me. What is the factorial of a negative number?
Actually, my equation doesn't work. It must be some different one. I do know that the factorial of 0 is 1 though. I'll let someone with more experience (and memory ðŸ˜›) take over for me in explaining this.
10. 05 Sep '05 01:44
0! is one? That's a new one for me.
11. 05 Sep '05 06:07
Originally posted by Coconut
0! is one? That's a new one for me.
I didn't know that either, but my calculator agrees.
12. AThousandYoung
All My Soldiers...
05 Sep '05 08:03
Originally posted by crazyblue
I didn't know that either, but my calculator agrees.
Yeah, it is. It's just defined that way.
13. Bowmann
Non-Subscriber
05 Sep '05 14:52
http://www.themathpage.com/aPreCalc/factorial.htm
14. Suzianne
Misfit Queen
06 Sep '05 13:303 edits
This is not the first time this subject has been visited in this forum... there was a thread called 0! in this forum posted on Jun 20, 2004. Right now, it's on page 20 of this forum if you care to take a look...

or, let's see if I can copy the url:

ack, tried to make it a link but dunno the bracket code for it
15. genius
Wayward Soul
07 Sep '05 12:26
Originally posted by Suzianne
This is not the first time this subject has been visited in this forum... there was a thread called 0! in this forum posted on Jun 20, 2004. Right now, it's on page 20 of this forum if you care to take a look...

or, let's see if I can copy the url: