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March 2015  Six Boxes
There are 6 boxes. Each box has a number inside it. They also have a label which truthfully describes the number inside the box. Here are the labels.
Box 1: The number in Box 5 minus the sum of the numbers in Boxes 4 and 6.
Box 2: The sum of the numbers in Boxes 3 and 4 minus the number in Box 1.
Box 3: The number in Box 1 plus twice the number in Box 4.
Box 4: Three less than the number in Box 1.
Box 5: One less than the sum of the numbers in Boxes 2 and 6.
Box 6: Twice the number in Box 1 minus the number in Box 4.
The answer is the product of the greatest and least number in the boxes.
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