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Ring ring! Give the cards a call, they’ll tell you which one is yours!
This smart card can find the card the spectator picked, every time. Incredible!
Turn over, add up and impress!
With a few operations, find the values of the three dice!
Can you put back these 5-square pieces?
Cut squares out of rectangles!
Look at this assortment of beautiful kites!
Come on, we’re going to the Eiffel Tower!
What if you had the ability to see through dice?