We’ve put together 19 brain-teasing questions covering everything from factorials and exponents to square roots and fractions. 🧠 🙀 Your task is simple: for each question, you’ll see two numbers. You ...

Quick - what's the square root of 2? What do you mean you don't have a calculator? Well, you can start guessing, right? So let's work this through. You know you have an upper bound - it has to be less ...