document.write( "Question 412530: how many 4-digit pins are possible if the first digit may not be a zero, and one of the digits may be repeated? \n" ); document.write( "
Algebra.Com's Answer #289751 by Alan3354(69443) You can put this solution on YOUR website! 9*10*10*10 if you mean any digit can be repeated. \n" ); document.write( "If one of them, and not the others, can be repeated, you'll have to clarify that. \n" ); document.write( "= 9000 PINs \n" ); document.write( " \n" ); document.write( " |