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Using the numbers 0, 2, 4, 5, 9, find the total number
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document.write( "For example, One such 6-digit number is 502294, \r\n" );
document.write( "another is 209955, and still another is 999999.\r\n" );
document.write( "We can choose the same digit more than once.\r\n" );
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document.write( "The only restriction is with the first digit.\r\n" );
document.write( "The first digit cannot be 0. So we choose the\r\n" );
document.write( "most restricted things first.\r\n" );
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document.write( "We can choose the first digit as any of these \r\n" );
document.write( "4 digits {2,4,5,9). \r\n" );
document.write( "For each of those ways,\r\n" );
document.write( "we can choose the second digit as any of these \r\n" );
document.write( "5 digits {0,2,4,5,9). \r\n" );
document.write( "For each of those ways,\r\n" );
document.write( "we can choose the third digit as any of these \r\n" );
document.write( "5 digits {0,2,4,5,9). \r\n" );
document.write( "For each of those ways,\r\n" );
document.write( "we can choose the fourth digit as any of these \r\n" );
document.write( "5 digits {0,2,4,5,9). \r\n" );
document.write( "For each of those ways,\r\n" );
document.write( "we can choose the fifth digit as any of these \r\n" );
document.write( "5 digits {0,2,4,5,9). \r\n" );
document.write( "For each of those ways,\r\n" );
document.write( "we can choose the sixth digit as any of these \r\n" );
document.write( "5 digits {0,2,4,5,9). \r\n" );
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document.write( "Answer 4×5×5×5×5×5 = 12500 six digit numbers.\r\n" );
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document.write( "Edwin \n" );
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