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Statistics deals with the mathematics of probability-based games. This tag should be used for questions about tabletop game mathematics that relate to mechanics rather than game elements such as skills or attributes, and have relevance to RPGs in particular.

18 votes

What is the probability for a thousand with 3 D10

If you're using 1 die as a hundreds digit, 1 die as a tens digit, and 1 die as a ones digit, then every number between 1 and 1000 has a 0.1% chance of occurring. If by doubles you mean 155, 944, etc. …
Oblivious Sage's user avatar
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79 votes

If I score a critical hit on an 18 or higher, what are my chances of getting a critical hit ...

For "at least one" probability problems, it's usually easier to start by calculating the chance that none of the dice crit, as that saves you the hassle of combining the probabilities of getting 1/2/3 …
Oblivious Sage's user avatar
  • 55.3k