July 7th, 2008, 10:57 PM
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| Junior Member | | Join Date: Jun 2008
Posts: 47
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Quote:
Originally Posted by Jhevon  to be even, the number has to end with the 4 or the 6.
to end with 4, the number is of the form ****4, where the *'s represent the other numbers. there are 4! ways to make such a number, by permuting the 4 *'s
the same holds true if we end the number with 6.
so that in all, there are 2*4! = 48 even numbers | LOL thanks!. looks like i thought 3 was an even number hahahahaha.
problem solved  |