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Technical riddles (e-Book)
Do you know which ball will finish first? Or can you determine the inside of a sphere without tools? Or explain what will happen to the inner diameter of a washer when heating it? The... Meer -
Technical riddles.
Do you know which ball will finish first? Or can you determine the inside of a sphere without tools? Or explain what will happen to the inner diameter of a washer when heating it? The... Meer