Chris Smith: Today’s problem is all about the number 2. 2 is a number with some very special powers. Let me show you what I mean. In maths, when we talk about powers, we mean how many times 2 has been ...

Math problem pyramid scheme: A fake Facebook event disguised as a “genius-level math contest” has been a top post for half a year, somehow racking up 115M+ views. Spoiler: It’s just a viral engagement ...