Consider this sequence of numbers: 5, 7, 9. Can you spot the pattern? Here’s another with the same pattern: 15, 19, 23. One more: 232, 235, 238. “Three equally spaced things,” says Raghu Meka, a ...

Are you a fan of escape rooms? You don’t actually need to leave the house since there are plenty of virtual escape rooms on the internet. One such escape room is Trace, from Cool Maths Games, and if ...