It's Friday, so why not take a break and solve this Seven Planet Riddle from Ted-Ed. Getting the answer doesn't have to be just about getting the answer, solving riddles is a fun way to keep your brain sharp.
Riddles also let you improve upon your problem solving skills. The key to solving a problem is simplifying the issue to better understand it and using deductive reasoning, no different than when IT contractors find solutions for clients. So take a stab at the riddle and see what you come up with!