document.write( "Question 559793: Please help me solve this SAT practice question?
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document.write( "Berkeley Airlines tickets have 4-digit codes. How many codes are possible if the digits are any 4 digits? What if the digits are all multiples of three?
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document.write( "I tried to go through and list all the possible codes, but that was taking forever. So I was just wondering if there are any more efficient ways of solving these problems. \n" );
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Algebra.Com's Answer #363524 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! from 0000 to 9999 ; 10000 codes\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "starting with 0000 ; every third number is a multiple of 3 ___ 3334 codes \n" ); document.write( " |