We have an equation that needs to be solved. The starting equation is 9×5=32. Unfortunately, this equation is wrong and you need to solve it in less than 25 seconds. Puzzles and brain teasers are popular methods of testing intelligence quotient (IQ). They can also be used to challenge your friends on social networks and … Continue reading Matchstick brain teaser: Challenge your IQ with this tricky math puzzle and move only 2 matchsticks!