I have a friend who’s a world-renowned mathematician. He doesn’t think like me. Or you. Or, indeed, anyone else I know. This is a good thing — certainly for him. Especially as mathematicians of one ...

This is a preview. Log in through your library . Abstract The problem considered is that of selecting a subset of the smallest possible fixed size s that will contain the t best of k populations (t ⩽ ...

Time to test your brain! Are you a puzzle person? Most of these hard math problems aren’t straightforward arithmetic. They challenge you to look at problems a different way, testing your logic and ...