document.write( "Question 1156025: On the dial of a telephone there are ten numbered holes, one of which is marked 0. If 0 is dialled first, the exchange is rung. In how many ways can a number of three digits be dialled without ringing the exchange? \n" ); document.write( "
Algebra.Com's Answer #778709 by BlGDAVE(19)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( " |