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KVÍZ pre matematikov: Zvládli by ste Pytagoriádu pre žiakov základných škôl? No ukážte sa

Beautiful redhead teacher sitting behind a desk in a classroom. She is wearing a white shirt, bright red necktie and a pair of glasses. Mathematical symbols on the blackboard behind her. Several books on the desk in front of her.

Zdroj: iStockphoto

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