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Re: How many combinations are there

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Scriptural is not online. Scriptural
Joined: 06 Sep 2013
Total Posts: 2979
18 Oct 2013 02:51 PM
for a 3 letter word using "1234567890abcdefghijklmnopqrstuvwxyz"?
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dog456pop248 is not online. dog456pop248
Joined: 24 Aug 2008
Total Posts: 3977
18 Oct 2013 02:59 PM
basic math.

3 * 36 = 108

108 different combinations, if I did this correctly.
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InternetGuy is not online. InternetGuy
Joined: 28 Apr 2010
Total Posts: 3385
18 Oct 2013 03:00 PM
Correction:
46656
---
36^3
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dog456pop248 is not online. dog456pop248
Joined: 24 Aug 2008
Total Posts: 3977
18 Oct 2013 03:02 PM
Thanks for correcting me, I wasn't sure if I was right. 108 didn't seem large enough.
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InternetGuy is not online. InternetGuy
Joined: 28 Apr 2010
Total Posts: 3385
18 Oct 2013 03:02 PM
Lol, I hope you didn't take that as a rude way.
<3
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dog456pop248 is not online. dog456pop248
Joined: 24 Aug 2008
Total Posts: 3977
18 Oct 2013 03:04 PM
Certainly not, good sir.

*Politely and civilly click back to SH subforum*
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AgentFirefox is not online. AgentFirefox
Top 100 Poster
Joined: 20 Jun 2008
Total Posts: 22404
18 Oct 2013 03:26 PM
It actually depends on the criteria.


Duplicate letters allowed?
EX: aaa
Combinations = 36 ^ 3

Duplicate letters not allowed and order matters?
EX: abc =/= acb =/= bac =/= bca =/= cab =/= cba
Combinations = 36 * 35 * 34

Duplicate letters not allowed and order does not matter?
EX: abc == acb == bac == bca == cab == cba
Combinations = 36! / (3! * 33!) = (36 * 35 * 34) / (3 * 2) = 35 * 34 * 6
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