If you’ve been playing Hogwarts Legacy for any lengthy of time, you have probably run into one of the above puzzle doors with triangles and numbers and symbols on them. Your reveal spell shows ...

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 ...

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...

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