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Assume that we have two groups of dice.
For half of them, call them Type I dice, ace (the side with one dot) comes up 30% of the time.
For the other half, call them Type II dice, ace (the side with one dot) comes up 60% of the time.
If a die is selected, rolled, and an ace comes up, what is the probability it is Type I ace?
What is the probability it is Type II ace?
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