Iro has a stack of cards with one number from the set 1, 1, 2, 2, 3, 3, 3, 4 written on each card. What is the probability that he pulls out a 3 first and then pulls out a 2 without replacing them?
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Which list places the divisions of the geologic time scale in order, from longest to shortest? epoch, period, era period, era, epoch era, period, epoch era, epoch, period
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