document.write( "Question 896744: How many diffeent 7 digits telephone numbers are possible if the first digit cannot be zero and no digit may repeat? \n" ); document.write( "
Algebra.Com's Answer #543938 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many diffeent 7 digits telephone numbers are possible if the first digit cannot be zero and no digit may repeat? \n" ); document.write( "------- \n" ); document.write( "Ans: 9*9*8*7*6*5*4 = 544320 \n" ); document.write( "---------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------ \n" ); document.write( " |