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If you had 36 cubes, what different cuboids could you make?

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Cereal Packets

How can you put five cereal packets together to make different shapes if you must put them face-to-face?

Five Coins

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2
How will you make sure you don't repeat any totals?
How will you make sure you find all the different ways?
It might help to limit yourself to just two types of coin first so that you develop a good system.