When you stumble upon a truly challenging riddle, it can keep your mind reeling for hours, days, or weeks at a time. After all, they're specifically designed to stretch your creativity and make you think outside of the box. If you thrive on that kind of challenge, you're going to love this one which apparently only 3% of people can solve, according to Bite Size Psych.
Here's the synopsis: Imagine you are a doctor and have a patient that is about to die from a tumor. There's a ray gun that can destroy the tumor, but the high intensity rays would also damage any healthy tissue it passes through. However, if your lower the intensity you can't destroy the tumor. The big question is, how do you destroy the tumor without damaging any tissue?
Watch this video to find out: