document.write( "Question 420132: to gain access to his account, a customer using an ATM must enter a four-digit code. if repitition of the same four digits are not allowed, how many possible combinations are there? \n" ); document.write( "
Algebra.Com's Answer #293672 by scott8148(6628)\"\" \"About 
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there are 10,000 numbers from 0000 to 9999\r
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\n" ); document.write( "\n" ); document.write( "minus the ten with four repeating digits (one for each digit)\r
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\n" ); document.write( "\n" ); document.write( "leaves 9990 possible combinations
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