document.write( "Question 563857: How many diffrent passcodes afe there in a four digit code with number 0 to 9 \n" ); document.write( "
Algebra.Com's Answer #365092 by fcabanski(1391)\"\" \"About 
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\n" ); document.write( "If repeats are allowed, then it is 10^4 = 10,000.


\n" ); document.write( "If repeats aren't allowed then it is 10C4 = 210.
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