SOLUTION: in a scientific study there are 12 guinea pigs, 5 of which are pregnant. If 3 are selected at random without replacement, find the probability that none are pregnant

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Question 560152: in a scientific study there are 12 guinea pigs, 5 of which are pregnant. If 3 are selected at random without replacement, find the probability that none are pregnant
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
p(none are pregnant) = (5/12) * (3/9) Can you take it from here?