document.write( "Question 849368: how many distinct permutations can be made from the letters of the word \"mathematics\". \n" ); document.write( "
Algebra.Com's Answer #511534 by Theo(13342)![]() ![]() You can put this solution on YOUR website! the word mathematics has:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "11 letters in total \n" ); document.write( "2 of the letter 'a' \n" ); document.write( "2 of the letter 'm' \n" ); document.write( "2 of the letter 't'\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i believe that's all the duplicates.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the permutation formula is 11! / (2! * 2! * 2!)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this becomes 11! / 8 which is equal to 4,989,600.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you take the permutation of the whole number and you divide by the permutation of each of the duplicates.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "for example:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "consider the letters ABC.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the permutation of these is 3! = 6.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "those permutations are:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "ABC \n" ); document.write( "ACB \n" ); document.write( "BAC \n" ); document.write( "BCA \n" ); document.write( "CAB \n" ); document.write( "CBA\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now consider the permutation of the letters AAC.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "use the formula given above and you get 3! / 2! which is equal to 6/2 = 3.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "those permutations are:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "AAC \n" ); document.write( "ACA \n" ); document.write( "CAA\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |