(adsbygoogle = window.adsbygoogle || []).push({}); Dice---How many throws?

How many throws of a pair of 6-sided dice are required (on average) for all points (2 through 12) to appear?

My simulation program says between 55 and 60, but I am more interested in knowing how to derive the answer by calculating probabilities.

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# Dice-How many throws?

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