document.write( "Question 1133917: enter a 7 digit registration code made up of the digit 1,2,3,4,5,6,7 and 9 each number has to be used and no number can be used more than once how many codes are possible \n" ); document.write( "
Algebra.Com's Answer #751176 by greenestamps(13203)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "None. \n" ); document.write( "There are 8 digits; if the code has to use every one, then the code will be 8 digits. \n" ); document.write( "That is, there are no 7-digit codes that use all 8 of the given digits. \n" ); document.write( " |