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Quick math question
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Sayf-Allah
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Join Date: Aug 2006
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Nov 2, 2008, 04:18 PM
 
Hi

I just can't figure out what the formula is for the following row of numbers....

1 1 2 6 24 120....

I know it's like this
1 2 3 4 5 6....
1 1 2 6 24 120...

1x1=1 1x2=2 2x3=6 and so on

But for some reason I can't find a formula for this....

Anyone able to help with this?

"Learn to swim"
     
Ghoser777
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Join Date: Dec 2000
Location: Chicago, Illinois
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Nov 2, 2008, 04:25 PM
 
It looks like the factorial function.

0! = 1
1! = 1
2! = 2
3! = 6
4! = 24
5! = 120

Etc.
     
Sayf-Allah  (op)
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Nov 2, 2008, 04:26 PM
 
Ah, of course!

Knew it was simple.

Thanks!

"Learn to swim"
     
gradient
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Join Date: Aug 2005
Location: Vancouver, BC
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Nov 3, 2008, 03:20 AM
 
I don't get it. Totally my fault for dropping out of highschool math, of course.
     
Sayf-Allah  (op)
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Nov 3, 2008, 04:52 AM
 
Originally Posted by gradient View Post
I don't get it. Totally my fault for dropping out of highschool math, of course.
3! = 1x2x3
4! = 1x2x3x4
5! = 1x2x3x4x5

and so forth.

"Learn to swim"
     
   
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