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Set S consists of all prime integers less than 10. If two [#permalink]
29 Oct 2007, 22:49
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Set S consists of all prime integers less than 10. If two numbers are chosen form set S at random, what is the probability that the product of these numbers will be greater than the product of the numbers which were not chosen?
Since there are only four elements in the set, you can quickly calculate, say if we pick 2 and 3, the product would be 6, and the product of the remaining numbers would be 35 and so (2,3) cannot be a winning set since 6 < 35.