Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...

iOS/Android/Desktop: Default calculator apps suck. They work like a traditional handheld calculator, which only displays one value at a time and can only do basic math. If you want to do anything more ...

Brain teasers are puzzles that help us sharpen our minds and improve our ability to think clearly. They often engage us with tricky problems, which boost our focus and problem-solving skills. Maths ...