document.write( "Question 1170619: How many 3-letter \"codes\" can be made from 7 letters \"LMNOPQR\" if repetition is not allowed? \n" ); document.write( "

Algebra.Com's Answer #795465 by ikleyn(52800) $\"\"$ $\"About$

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document.write( "We are given 7 (seven) different  letters.\r\n" );
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document.write( "      In codes, the order DOES MATTER.\r\n" );
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document.write( "      Therefore, we consider PERMUTATIONS - not combinations.\r\n" );
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document.write( "The number of all 3-letter codes is  7*6*5 = 210.\r\n" );
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document.write( "ANSWER.   210 different codes.\r\n" );
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