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Where are the math people? I have a question

If you have 3 six sided dice, how many rolls would you have to make (on average) before they all showed the same digit?
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Northwest · M
If you pick any single number, let's say 3.

Individually, you would need to roll one dice, at minimum, 6 times to possibly get a 3. That's the minimum probability.

So, that's 1/6, and each roll is a separate event. So, 6 events for each dice, and each dice is 1/6, you end up with: 1/6 * 1/6 * 1/6 * 6 = 1/36, or 36 different attempts are required to get the minimum probability.

The upper bound is limitless, because each roll of the dice, represents an individual event.