document.write( "Question 1026713: How many 3-digit area codes are possible, assuming that the first digit cannot be a 1 or a 0? \n" ); document.write( "
Algebra.Com's Answer #641984 by mathmate(429)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Question: \n" ); document.write( " How many 3-digit area codes are possible, assuming that the first digit cannot be a 1 or a 0? \n" ); document.write( " \n" ); document.write( "Solution: \n" ); document.write( "This is a three step experiment. \n" ); document.write( "The number of possible outcomes is the product of the individual steps. \n" ); document.write( "Each digit can vary from 0-9 (10 choices) except the first which is 2-9 (8 choices). \n" ); document.write( "Step 1: 8 possible outcomes. \n" ); document.write( "Step 2: 10 possible outcomes \n" ); document.write( "Step 3: 10 possible outcomes \n" ); document.write( "Number of possible outcomes for the experiment = 8*10*10 = 800 \n" ); document.write( " |