Still, others present their brain teasers through pictures, making them great for visual learners. From Reader's Digest's Mind Stretchers books, these math puzzles have a bit of everything!
You’re sitting at a velvet-black table, cards fanned out like a magician’s trick, and the dealer flashes a coy smile. The thrill of blackjack isn’t just in the flick of a wrist or the clink of ...