document.write( "Question 631157: A company ID card contains 7 digits, such as 92, 71, 042.
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document.write( "How many different ID numbers can be formed? \n" );
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Algebra.Com's Answer #397378 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! 92, 71, 042. \n" ); document.write( "If 00 & 000 are allowed then: \n" ); document.write( "100*100*1000=10,000,000 ans.\r \n" ); document.write( "\n" ); document.write( "If not allowed: \n" ); document.write( "99*99*999=9,791,199 ans. \n" ); document.write( " |