IQ tests, puzzles, and brain teasers have been used for centuries by scholars and researchers to assess intelligence. These challenges have become popular on social networks, engaging people of all ages in a battle of wits. Today, we present you with the ultimate brain teaser. Can you solve this equation in less than 15 seconds? … Continue reading IQ test: Do you think you’re a maths whiz? Move only 1 stick in under 15 seconds!