Question: how many combinations are there in a 4x4 rubik's cube?
Answer: Think about that next time you twist the 4×4. As if that's not enough, the 5x5x5 Rubik's cube (called the Professor's Cube) has 282 870 942 277 741 856 536 180 333 107 150 328 293 127 731 985 672 134 721 536 000 000 000 000 000 combinations (aka 283 trevigintillion).