document.write( "Question 1108281: Serial numbers for a product are to be made using 4 letters followed by 4numbersif the letters are to be taking from the first 6 letters of the alphabet with no repeat as and the numbers are taken from the the digit 0 through 9 with no repeats how many serial numbers can be generated \n" ); document.write( "
Algebra.Com's Answer #723295 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "There are 6*5*4*3 = 360 4-letter words made of 6 letters without repetition, and\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "There are 10*9*8*7 = 5040 4-digit numbers made of 10 digits from 0 to 9 without repetition.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "In all, there are 650*5040 = 1814400 possible serial numbers.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |