document.write( "Question 1157247: How many four-digit numbers, each less than 600, can be made with the digits 1,3,4,5,7,8 and 9 if a.)repetitions allowed b.) no repetitions are allowed \n" ); document.write( "
Algebra.Com's Answer #780086 by ikleyn(52787)\"\" \"About 
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\n" ); document.write( "How many four-digit numbers, each less than 600, can be made with the digits
\n" ); document.write( "1,3,4,5,7,8 and 9 if a.)repetitions allowed b.) no repetitions are allowed
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\n" ); document.write( "\n" ); document.write( "If you mean positive integer numbers (as I understand the problem BY DEFAULT), then \r
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\n" ); document.write( "\n" ); document.write( "THERE IS NO four-digit numbers, each less than 600.\r
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