Question: 1. (Hat Check problem). n people enter the restaurant and put their hats at the reception. Each person gets a random hat back when

1. (Hat Check problem). n people enter the restaurant and put their

1. (Hat Check problem). n people enter the restaurant and put their hats at the reception. Each person gets a random hat back when going back after having dinner. Find the expected value and variance of the number of people who get their right hat back.

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