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to get 31 using the number 4 exactly 4 times, you can do: (4! + 4)/4 + 4!

4! is four factorial, which is 4x3x2x1, which is 24. So you have 24 + 4 = 28, /4 = 7, + 24 = 31.

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โˆ™ 2009-10-31 02:15:58
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Q: How can you make the number 31 using 4 4's?
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