document.write( "Question 751962: Most ATMs require that you enter a four-digit code, using the digits 0 to 9. How many 4-digit number codes can be formed
\n" ); document.write( "a) without any restrictions?
\n" ); document.write( "b) with all digits the same?
\n" ); document.write( "c) with different digits?
\n" ); document.write( "d) with alternate even and odd digits?
\n" ); document.write( "e. with last two digits 0?
\n" ); document.write( "f) with last two digits 0 or 1?
\n" ); document.write( "g) with first digit 5?
\n" ); document.write( "h) with first and last digits 5?
\n" ); document.write( "i) with the middle two digits 0?
\n" ); document.write( "j) 2 pairs of digits the same?
\n" ); document.write( "k) 2 digits are the same and the other 2 digits are each different?
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Algebra.Com's Answer #457520 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "1. 0 to 9 is 10 digits, so 10 X 10 X 10 X 10 = = 10,000\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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\"The

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