document.write( "Question 301724: How many 3-digit numbers greater than 400 can you make using the numbers 2, 1, 4 and 3 only once each time? \n" ); document.write( "

Algebra.Com's Answer #216336 by Fombitz(32388) $\"\"$ $\"About$

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The first number needs to be a 4 so that the number is > 400.
\n" ); document.write( "That leaves 3 numbers (1,2,3) for 2 positions.
\n" ); document.write( " $\"N=3%21%2F%283-2%29%21=6\"$ numbers
\n" ); document.write( "or by brute force,
\n" ); document.write( " $\"+412+\"$
\n" ); document.write( " $\"+413\"$
\n" ); document.write( " $\"+421\"$
\n" ); document.write( " $\"+423\"$
\n" ); document.write( " $\"+431\"$
\n" ); document.write( " $\"+432\"$
\n" ); document.write( "6 numbers.
\n" ); document.write( " \n" ); document.write( "

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