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)\"\" \"About 
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