Can you steal the most powerful wand in the wizarding world? - Dan Finkel
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Here’s another argument to attack this problem based on the idea that the number doesn’t really matter. Solve the riddle with only two stones. Then suppose you had solved it with any number of stones, say, N stones. Could you solve it with N + 1 stones? This type of argument is known as induction, and can help us solve some tricky problems, like this one.

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