document.write( "Question 824863: How many alphabetically ordered 7 letter words (meaningless or not) can be made with the 26 letters of the alphabet. Note: repetition of letters is not allowed \n" ); document.write( "
Algebra.Com's Answer #497205 by Edwin McCravy(20056)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "If we start with the complete alphabet:\r\n" ); document.write( "\r\n" ); document.write( "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r\n" ); document.write( "\r\n" ); document.write( "and choose 19 of the letters to remove, for instance like this:\r\n" ); document.write( "\r\n" ); document.write( "A---E--H-JK------R------Y-,\r\n" ); document.write( "\r\n" ); document.write( "that will leave the alphabetically ordered 7-letter \"word\" AEHJKRY.\r\n" ); document.write( "\r\n" ); document.write( "So from the 26 letters we want to choose 19 to remove.\r\n" ); document.write( "\r\n" ); document.write( "Answer: C(26,19) = 657800\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |