A maths brain teaser confused social media users with odd equations, sparking debates as people raced to crack the hidden ...

Brain teasers are fun little puzzles that make you think in different ways. They might look simple at first, but they often have a twist that surprises you. Solving them gives your brain a good ...

This article shares a viral missing number puzzle that tests your brain. Try to solve it first, then check the answer we have ...

Jenny Quinn, executive director of the Seattle Universal Math Museum, shows off a solved Fibonacci sequence puzzle. (GeekWire ...