document.write( "Question 1177814: consider the numbers 1,4,5,8,9 and 0. if repetition is not aalowed, how many three-digit numbers can be formed from these numbers? \n" ); document.write( "
Algebra.Com's Answer #806936 by math_helper(2461)\"\" \"About 
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\n" ); document.write( "Five choices for the hundreds digit {1,4,5,8,9}.
\n" ); document.write( "Five choices for the tens digit {five digits, the four not chosen above, + \"0\"}.
\n" ); document.write( "Four choices for the ones digit {the four remaining digits}.
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\n" ); document.write( "\n" ); document.write( "5*5*4 = 100
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\n" ); document.write( "\n" ); document.write( "The above assumes a true 3-digit number (in the purest numerical sense, \"014\" would not be a 3-digit number because it is normally written \"14\"). However, in some applications (keypad lock for example, 014 could be combination). If leading zero is allowed, you get 6*5*4...\r
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