document.write( "Question 480557: HOW MANY PERMUTATIONS ARE THERE OF THE FOLLOWING WORD.
\n" ); document.write( "M n1 MATHEMATICS 11 LETTERS n=11
\n" ); document.write( "A n2
\n" ); document.write( "T n3
\n" ); document.write( "H n4
\n" ); document.write( "E n5
\n" ); document.write( "M n6 ( 11 ) 11!
\n" ); document.write( "C n7 _____
\n" ); document.write( "T n8 ( 2,2,2,1,1,1,1,1 )= 2!2!2!1!1!1!1!1! now the question is what
\n" ); document.write( "I n9 do I do after this?
\n" ); document.write( "C n10 PLEASE SOMEONE EXPLAIN TO
\n" ); document.write( "S n11 ME STEP BY STEP:: THANKS
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Algebra.Com's Answer #329115 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
mathematics has 11 letters.
\n" ); document.write( "there are 2 m's
\n" ); document.write( "there are 2 a's
\n" ); document.write( "that are 2 t's
\n" ); document.write( "the number of permutations should be:
\n" ); document.write( "11! / (2!*2!*2!) = 4989600
\n" ); document.write( "to see how this works, use much smaller numbers.
\n" ); document.write( "suppose your letters were \"mat\"
\n" ); document.write( "the number of permutations would be 3! = 6
\n" ); document.write( "those permutations would be:
\n" ); document.write( "mat
\n" ); document.write( "mta
\n" ); document.write( "amt
\n" ); document.write( "atm
\n" ); document.write( "tam
\n" ); document.write( "tma
\n" ); document.write( "now suppose your letters were \"mma\"
\n" ); document.write( "the number of permutations would be 3!/2! because 2 of the letters were the same.
\n" ); document.write( "those permutations would be:
\n" ); document.write( "mma
\n" ); document.write( "mam
\n" ); document.write( "amm
\n" ); document.write( "now suppose your letters were \"mmat\"
\n" ); document.write( "the number of permutations, if our equation is correct, would be 4!/2! = 12
\n" ); document.write( "those permutations would be:
\n" ); document.write( "mmat
\n" ); document.write( "mmta\r
\n" ); document.write( "\n" ); document.write( "mamt
\n" ); document.write( "matm
\n" ); document.write( "ammt
\n" ); document.write( "amtm\r
\n" ); document.write( "\n" ); document.write( "mtam
\n" ); document.write( "mtma
\n" ); document.write( "tmam
\n" ); document.write( "tmma\r
\n" ); document.write( "\n" ); document.write( "atmm
\n" ); document.write( "tamm\r
\n" ); document.write( "\n" ); document.write( "that's a total of 12.\r
\n" ); document.write( "\n" ); document.write( "now, suppose your letters are \"mmtt\"\r
\n" ); document.write( "\n" ); document.write( "the number of permutations would be 4!/(2!*2!) = 24/4 = 6\r
\n" ); document.write( "\n" ); document.write( "those permutations would be:\r
\n" ); document.write( "\n" ); document.write( "mmtt
\n" ); document.write( "ttmm\r
\n" ); document.write( "\n" ); document.write( "mtmt
\n" ); document.write( "tmtm\r
\n" ); document.write( "\n" ); document.write( "tmmt
\n" ); document.write( "mttm\r
\n" ); document.write( "\n" ); document.write( "that's a total of 6.
\n" ); document.write( "the formula works as can be seen with the smaller numbers.
\n" ); document.write( "applying it to the larger numbers gets you
\n" ); document.write( "number of permutations in \"mathematics\" is equal to 11!/(2!*2!*2!) = 4989600.\r
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\n" ); document.write( "\n" ); document.write( "11! / (2!*2!*2!) is equal to 11*10*9*8*7*6*5*4*3*2*1 / 2*1*2*1*2*1
\n" ); document.write( "since the denominator winds up being 8, we cancel the 8 from the numerator with it to get:
\n" ); document.write( "11! / (2!*2!*2!) = 11*10*9*7*6*5*4*3*2*1
\n" ); document.write( "this is equivalent to:
\n" ); document.write( "11! / (2!2!*2!) = 110 * 96 * 30 * 12 * 2 which is equal to 6930 * 720 which is equal to 4989600\r
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\n" ); document.write( "\n" ); document.write( "formula looks good and that should be your answer.\r
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