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Domino Square

Use the 'double-3 down' dominoes to make a square so that each side has eight dots.

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4 Dom

Use these four dominoes to make a square that has the same number of dots on each side.

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Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

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