Why? Hard riddles like this are tricky because they seem to invite straightforward, logical thinking. You may come up with ...

There are lots of kinds of hard riddles—silly ones, weird ones, ones that make you groan when you hear the answer. But they all flex our brains and challenge us to think in a new way.

Your Favourite Colour Reveals Your Hidden Personality Traits IQ riddles challenge your logical ... But is he the one at risk? The answer lies in the details. High IQ individuals can analyze ...