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Lilith
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Post subject: Math..kind of.  Posted: Tue Jul 08, 2008 4:25 pm |
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Joined: Tue May 08, 2007 12:00 am
Posts: 51
Location: Florida
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Well, I can't find it on Google, so I figured I'd ask here...
If you have 36 variables (26 from A-Z and 10 from 0-9) how many combinations of letters and numbers can you make if the choices can be a 1, 2, 3, or a 4 variable combination? And how is the math on that achieved?
e.g. ab30, 20, 30as, kf93, etc.
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Regriam Banther
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Calan
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Post subject: Posted: Tue Jul 08, 2008 4:28 pm |
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Joined: Thu Sep 06, 2007 12:00 am
Posts: 4579
Location: Sacramento, CA
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36^1 = 36
36^2 = 1,296
36^3 = 46,656
36^4 = 1,679,616
If I understood what you wanted correctly...
Edit:
The answers above are for 1, 2, 3 and 4 digit combinations only, respectively. If you want the answer for a 1, 2, 3 or 4 digit combination, you need to add all of those together:
36 + 1,296 + 46,656 + 1,679,161 = 1,727,604
Last edited by Calan on Tue Jul 08, 2008 4:33 pm, edited 1 time in total.
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Lilith
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Post subject: Posted: Tue Jul 08, 2008 4:32 pm |
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Joined: Tue May 08, 2007 12:00 am
Posts: 51
Location: Florida
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I might be wrong, I'm not good at math, but...
Is that right? I mean, does that include combinations like "aaaa" "bbbb" "cccc" etc?
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Regriam Banther
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Insanity
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Post subject: Posted: Tue Jul 08, 2008 4:33 pm |
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Joined: Sun Sep 23, 2007 12:00 am
Posts: 1336
Location: Hibernia
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Yeh..
36*36*36*36 = 36^4 = 1,679,616
Edit: While I'm at it, I should point out that this is the wrong forum. 
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Local Lurker and Knower of the Unknown and Unknowable. Also a bit full of itself, and an occasional prick.
Last edited by Insanity on Tue Jul 08, 2008 4:35 pm, edited 1 time in total.
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Calan
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Post subject: Posted: Tue Jul 08, 2008 4:34 pm |
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Joined: Thu Sep 06, 2007 12:00 am
Posts: 4579
Location: Sacramento, CA
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I edited my reply, by the way, and yes it would include duplicate digits.
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Lilith
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Post subject: Posted: Tue Jul 08, 2008 4:35 pm |
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Joined: Tue May 08, 2007 12:00 am
Posts: 51
Location: Florida
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Well, I feel dumb. Why didn't I think of that? ;<
Thanks!!
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Regriam Banther
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D_Black
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Post subject: Posted: Tue Jul 08, 2008 5:05 pm |
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Joined: Mon Oct 29, 2007 12:00 am
Posts: 1604
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Alright, I moved it to the proper topic.
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Angerona
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Post subject: Posted: Tue Jul 08, 2008 9:01 pm |
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Joined: Wed Mar 07, 2007 12:00 am
Posts: 120
Location: Washington State USA
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Lilith hun if you have a graphing calculator put in the number of things you have like you have 31 flavors of ice cream, then hit the MATH button and scroll over to the PROB option and goto to nCr and hit that, then put in the number of flavors combinations you want like 3 for 3 scoops and it will tell you how many 3 scoop combination you can have with 31 flavors.
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Calan
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Post subject: Posted: Tue Jul 08, 2008 10:41 pm |
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Joined: Thu Sep 06, 2007 12:00 am
Posts: 4579
Location: Sacramento, CA
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Or you can type 31^3<enter>
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