document.write( "Question 162709: number of ways that two letters can be selected from {A, B, C, D} if order in the sample is to be considered. List the possible samples.\r
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Algebra.Com's Answer #119946 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "number of ways that two letters can be selected from {A, B, C, D} if order in the sample is to be considered. List the possible samples. \r\n" );
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document.write( "Your answer is wrong because you cannot duplicate a member of a set, \r\n" );
document.write( "such as AA.  There is but one A to choose.  The permutations are \r\n" );
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document.write( "AB\r\n" );
document.write( "AC\r\n" );
document.write( "AD\r\n" );
document.write( "BA\r\n" );
document.write( "BC\r\n" );
document.write( "BD\r\n" );
document.write( "CA\r\n" );
document.write( "CB\r\n" );
document.write( "CD\r\n" );
document.write( "DA\r\n" );
document.write( "DB\r\n" );
document.write( "DC\r\n" );
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document.write( "4 place 2.   Permutations of 4 things taken two at a time.\r\n" );
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document.write( "Edwin
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