document.write( "Question 333411: find the number of ways in which an arrangement of of 4 letters can be made from the word MATHEMATICS
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document.write( "a)1680
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document.write( "b)756
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document.write( "c)18
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document.write( "d)2454 \n" );
document.write( "
Algebra.Com's Answer #238927 by jrfrunner(365)![]() ![]() You can put this solution on YOUR website! while the word MATHEMATICS has 11 words, there are really only 8 unique words \n" ); document.write( "M, A and T are duplicated. \n" ); document.write( "---\r \n" ); document.write( "\n" ); document.write( "So, your problem becomes number of arrangements of 4 letters from a word of 8 unique letters \n" ); document.write( "--- \n" ); document.write( "there are 8 choices for the first word \n" ); document.write( "there are then 7 choices for the second word \n" ); document.write( "after that there are 6 choices for the third word \n" ); document.write( "and finally there are 5 choices for the fourth word\r \n" ); document.write( "\n" ); document.write( "8*7*6*5=1680 \n" ); document.write( " |