Get your thinking caps on and grap a pencil and some paper. You’ll need some time to work on these puzzles, but they are fun!
The Einstein Puzzle
Variations of this riddle appear on the net from time to time. It is sometimes attributed to Albert Einstein and it is claimed that 98% of the people are incapable of solving it. Some commentators suggest that Einstein created such puzzles not to test intelligence but to get rid of all the students who wanted him as an advisor. It is not likely that there is any truth to these stories. Whereever this comes from, it is a nice riddle.
Heaven or Hell
This riddle doesn’t seem like it should be hard, but it’s much trickier than it appears. There are multiple ways to phrase the question, but it will lead you to the right door 100 percent of the time.
Another classic where you have to use your logic to determine the probability of a marble being either black or white.