At the back is the 4 by 4 rubix cube. The front bottom is the normal 3 by 3 rubix cube. On top of it is the 2 by 2 rubix cube.
When I was in primary school, people who have been seen solving a Rubix’s cube were nicknamed nerds. They were considered smart because no matter how many times we turned the Rubix’s cube, we could never solve 1 side without affecting the other.

The Rubix’s cube. It was never meant to be a toy. The Rubik’s cube was invented in 1974 by Erno Rubik. Hence the name, Rubix’s cube. He was a Hungarian Architect who wanted to help explain 3-Dimensional geometry. Although he invented it. He could not solve it. The Rubix’s cube can be re-arranged 43 quintillion times(That’s a big number). Coming into the 1980s, speedcubing was the craze. By the time you finish reading this sentence, Feliks Zemdegs, a 22-year-old Aussie, had already solved the Rubix’s cube. (As of May 8, 2018). He smashed the previous world record by 0.37 seconds. He now holds the Guinness world record for the fastest timing with 4.221 seconds.  Amazing!

http://www.guinnessworldrecords.com/news/2018/5/feliks-zemdegs-achieves-fastest-time-to-solve-a-rubiks-cube-in-4-22-seconds-524695

Logic will take you from A to B;

Imagination can take you anywhere.

– Albert Einstein

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