IQ, short for intelligence quotient, is a measure of a person’s reasoning ability.Many colleges and universities also use exams similar to IQ tests to select students1

Think that you’re observant enough to spot the subtle differences between pictures? Get your eyes ready because this is tricky. This spot the difference pictures will have you in for a treat.

The world is full of wonders that, if we look closely, can surprise us. Of course, not everyone has the talent to pay attention to their surroundings, and often not even to the things that are in front of them!