Brain Game: Zero Hour

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I couldn't determine the original source of today's math puzzle chestnut; I've seen it in a few places, so suffice to say that it's several years old. It's still a great puzzle and a fun challenge. Good luck:

Group the digits 1-9 into a set of three 3-digit numbers,
using each digit only once in a set.

The second number should be exactly DOUBLE the first number;

and the third number should be exactly TRIPLE the first number.

There are three FOUR* possible sets of numbers that correctly
solve this puzzle; can you find one (or all of them)?

* see in comments!
Here are the SOLUTIONS.

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June 12, 2009 - 3:30am
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