document.write( "Question 496853: A certain math class has 21 people and each must work a problem out on the board. Determine the number of different orders that are possible. \r
\n" ); document.write( "\n" ); document.write( "I understand Permutations and Combinations but this is the only question that stumps me, if you could help me out. Thanks
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Algebra.Com's Answer #336582 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
There are 21 choices for the 1st person
\n" ); document.write( "There are 20 choices for the 2nd person
\n" ); document.write( "There are 19 choices for the 3rd person
\n" ); document.write( "and so on, until
\n" ); document.write( "There is 1 choice for the 21st person
\n" ); document.write( "This is a string of AND's not OR's
\n" ); document.write( "( any 1 of 21) AND ( any 1 of 20) AND ( any 1 of 19 ) etc.
\n" ); document.write( "When choices are ANDed, you multiply the possibilities
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\n" ); document.write( "This maxed out my little Staples 8 digit calculator. It
\n" ); document.write( "also equals \"+21%21+\"
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