SOLUTION: According to popular belief, 81% of adults enjoy drinking beer. Choose a group of 3 adults at random. The probability that none of them enjoy drinking beer is

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Question 624542: According to popular belief, 81% of adults enjoy drinking beer. Choose a group of 3 adults at random. The probability that none of them enjoy drinking beer is
Answer by Calmatsar(1) About Me  (Show Source):
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If 81% of adults enjoy beer then we will assume that the probabilty of any one randomly chosen adult enjoying beer is 0.81, this means that the probability of a randomly chosen adult not enjoying beer is 0.19.

Next we will assume that the probabilities of different adults liking beer are independent (one person liking beer does not depend on another liking beer). This means that for a selection of three randomly chosen people, the probability that none of them enjoy beer is the product of the individual probabilities of them not liking beer, which is:

0.19*0.19*0.19 = 0.006859.