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Business Insider
Oct 18, 2018, 3:04 pm442 ptsHotRubik's Cube is one of the most popular toys of all time — but not everyone can solve it. The colorful brain teaser was invented in the 1970s by Erno Rubik. Rubik was teaching architecture and design in Hungary when he created the cube to illustrate spatial relationships in 3D to his students — it took him…
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