document.write( "Question 617678: I asked a question a few weeks ago: How many ways can 4 people be chosen from a group of 9. permutation or combination?\r
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Algebra.Com's Answer #388480 by solver91311(24713) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "Depends. Does order matter? For instance, if you had a club with 9 members and you wanted to pick a President, Vice-President, Secretary, and Treasurer, then Bob, Sally, George, Ringo is different from Sally, Ringo, George, Bob. But if from the same club you just wanted to pick a 4 person committee, then Bob, Sally, George, Ringo is the same as Sally, Ringo, George, Bob or Ringo, George, Bob, Sally or any of the 21 other ways to order 4 things.\r
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\n" ); document.write( "\n" ); document.write( "If order matters: Permutation.

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\n" ); document.write( "\n" ); document.write( "If order does not matter: Combination.

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\n" ); document.write( "\n" ); document.write( "Notice that the two differ by a factor of

which puts the number of ways to arrange

things in the denominator of the combination calculation, making the permutation calculation larger by a factor of

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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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