Secret Santas IProbability puzzles require you to weigh all the possibilities and pick the most likely outcome.A group of about twenty friends decide to exchange gifts as secret Santas. Each person writes their name on a piece of paper and puts it in a hat and then each person randomly draws a name from the hat to determine who has them as their secret Santa.
What is the probability that at least one person draws their own name? HintThe probability converges on a single value as the number of people approaches infinity. At ten people the probability is accurate to better than 1 millionth for any number more than ten people.Hide What Next?
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