document.write( "Question 333411: find the number of ways in which an arrangement of of 4 letters can be made from the word MATHEMATICS
\n" ); document.write( "a)1680
\n" ); document.write( "b)756
\n" ); document.write( "c)18
\n" ); document.write( "d)2454
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Algebra.Com's Answer #238927 by jrfrunner(365)\"\" \"About 
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.
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\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
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