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Add the dice

Add the dice

Look at the image. How much do the points of the faces that remain in contact with the table add up?

Solution

The dice are manufactured so that their opposite faces add seven. In this case, the upper faces show the numbers 4, 2, 6, 1 and 4 so the opposite faces will be 7 - 4, 7 - 2, 7 - 6, 7 - 1 and 7 - 4 that is 3, 5 , 1, 6 and 3 in total 18.