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This smart card can find the card the spectator picked, every time. Incredible!
Thieves! Help Richard figure out the dimensions of the stolen piece.
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!
Help Benjamin and his mother prepare for their trip!
Look at this assortment of beautiful kites!
Come on, we’re going to the Eiffel Tower!