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## Difficult Math Problem #71 - Combinations

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800guy Master | Next Rank: 500 Posts
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#### Difficult Math Problem #71 - Combinations

Mon Dec 04, 2006 2:44 pm
In how many ways can 5 rings be worn on the four fingers of the right hand?

aim-wsc Legendary Member
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Sun Dec 17, 2006 8:09 pm
4 to the power of 5

I want you to provide the explanation to the answer if you have.
you know i suck at giving proper explanantion.

_________________
Getting started @BTG?

Please do not PM me, (not active anymore) contact Eric.

800guy Master | Next Rank: 500 Posts
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Tue Jan 02, 2007 9:45 am
OA:

5 rings, 4 fingers
1st ring can be worn on any of the 4 fingers => 4 possibilities
2nd ring can be worn on any of the 4 fingers => 4 possibilities
3rd ring can be worn on any of the 4 fingers => 4 possibilities
4th ring can be worn on any of the 4 fingers => 4 possibilities
5th ring can be worn on any of the 4 fingers => 4 possibilities

Total possibilities = 4*4*4*4*4 = 4^5.

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