The puzzle reads: 3 + 4 = 19 5 + 6 = 4 1 2 + 8 = 66 5 + 1 = ? At first glance, none of these make sense. According to standard math, 3 plus 4 is 7 — so how do we ...

Thomas Mulligan breaks down the common psychological traps and logical oversights that lead many to stumble when faced with ...

Add Yahoo as a preferred source to see more of our stories on Google. No matter your age, it's always a good idea to give your mind a workout. Interactive brain teasers like riddles, trivia, and fun ...