document.write( "Question 481946: How many numbers less than 300 can be formed from the digits 1,2,3,4 and 5 \r
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document.write( "a) If repetitions are not allowed?
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document.write( "b) repetitions are allowed? \n" );
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Algebra.Com's Answer #329976 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many numbers less than 300 can be formed from the digits 1,2,3,4 and 5 \n" ); document.write( "a) If repetitions are not allowed? \n" ); document.write( "left-most digit 2 ways \n" ); document.write( "Remaining 2 digits: 4C2 = 6 \n" ); document.write( "Total: 2*6 = 12 numbers \n" ); document.write( "-------------------------------- \n" ); document.write( "b) repetitions are allowed? \n" ); document.write( "left-most digit: 2 ways \n" ); document.write( "Remaining 2 digits: 4^2 = 16 \n" ); document.write( "Total: 2*16 = 32 numbers \n" ); document.write( "================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |