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Solve Combination Problem: Choose 4 Shoes from 5 Pairs

Thread starter ron_jay
Start date Jan 14, 2008
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Combination

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ron_jay

Thread starter
Jan 14, 2008

#1

Homework Statement

A closet has 5 pairs of shoes. The number of ways in which 4
shoes can be chosen from it so that there will be no complete pair are?

Homework Equations

Permutation and Combination formulae

The Attempt at a Solution

I tried but couldn't figure it out anyway.

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quantumdude

Staff Emeritus

Science Advisor

Gold Member

Jan 14, 2008

#2

It would be a lot easier for us to tell you what you did wrong, if you showed us what you did.

unplebeian

Jan 18, 2008

#3

Since you don't want to have a pair you are only left with 5 shoes to pick from. Now choose 4 from that.

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