Blog posts with problems to get your brain going! You get a new problem every fortnight and the solutions are published later.
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You may notice some problems are missing... I'm still migrating articles from my old blog.
Can you show that perfect compression is impossible?
A waiter at a restaurant gets a group's order completely wrong. Can you turn the table to get two or more orders right?
Is it true that every integer you can think of has a multiple written out only with \(0\)s and \(1\)s?