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 students. Think that you’re observant enough to spot the subtle differences between pictures? Can you find the Twins on the Beach?

Get your eyes ready because this is tricky. This spot the difference pictures will have you in for a treat. Sometimes we look at an image and something immediately catches our attention because it is not where it should be!

Other times we feel that something is wrong, but we don’t understand exactly what it is and so we have to look more closely. Then we notice details that we haven’t seen before and find more and more inconsistencies. Okay, that doesn’t usually happen in everyday life, but it does happen in our selection of images with strange errors that are difficult to detect.