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
\n" ); document.write( "\n" ); document.write( "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.\r
\n" ); document.write( "\n" ); document.write( "B) The number must begin and end with an odd digit, digits may not repeat.
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Algebra.Com's Answer #438311 by Alan3354(69443)\"\" \"About 
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.
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\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
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\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
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