How many people do you need to date to find the perfect match? Matt Parker explains in his book Things to Make and Do in the Fourth Dimension. First, take a guess at the number of different people you might go out with. A rough guess will do. Obviously you have to sleep, you probably won’t go on a date every night, and you’d like to be married before you’re 112, so the number isn’t as big as you might think. To make it simple, we’ll say it’s 100. We need the square root of that number. (Yes, the calculator app on your smartphone can help you find true love.) In our example, it’s 10. Now go out
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