document.write( "Question 584947: how many five-digit numbers have no two consecutive digits equal.\r
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Algebra.Com's Answer #373020 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "We can choose the first digit any of 9 ways, 1,2,3,4,5,6,7,8 or 9\r\n" );
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document.write( "We can then choose the 2nd digit any of 9 ways, 0 or any of 8 ways not chosen for the 1st digit\r\n" );
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document.write( "We can then choose the 3rd digit any of the 9 ways we didn't choose for 2nd digit.\r\n" );
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document.write( "We can then choose the 4th digit any of the 9 ways we didn't choose for the 3rd digit.\r\n" );
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document.write( "We can then choose the 5th digit any of the 9 ways we didn't choose for the 4th digit.\r\n" );
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document.write( "That's 9򊷹򊷹 = 95 = 59049\r\n" );
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document.write( "Edwin
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