document.write( "Question 713150: I've submitted this twice, can someone please help. I've completed the first 4 questions, these two are impossible to understand. Bless your heart for the help.\r
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document.write( "Use the digits 0 through 9, how many 4 digit numbers can be formed:\r
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document.write( "A) If the number must be between 5001 and 8000, digits may not be repeated.\r
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document.write( "B) The number must begin and end with an odd digit, digits may not repeat. \n" );
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Algebra.Com's Answer #438311 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Use the digits 0 through 9, how many 4 digit numbers can be formed:\r \n" ); document.write( "\n" ); document.write( "A) If the number must be between 5001 and 8000, digits may not be repeated. \n" ); document.write( "-------------- \n" ); document.write( "The 1st digit is 5, 6, or 7 --> \n" ); document.write( "The 2nd digit is 1 of 9 \n" ); document.write( "The 3rd is 1 of 8 \n" ); document.write( "The 4th is 1 of 7 \n" ); document.write( "--> 3*9*8*7 = 1512 \n" ); document.write( "------------------ \n" ); document.write( "B) The number must begin and end with an odd digit, digits may not repeat. \n" ); document.write( "1st digit is 1 or 5, last is 1 of 4 \n" ); document.write( "The 2nd is 1 of 8 \n" ); document.write( "The 3rd is 1 of 7 \n" ); document.write( "--> 5*4*8*7 = 1120 \n" ); document.write( " \n" ); document.write( " |