Question: A particular after-school activity involves 7 freshmen, 5 sophomores, 4 juniors, and 8 seniors. From these, four are selected to be interviewed by the local

A particular after-school activity involves 7 freshmen, 5 sophomores, 4 juniors, and 8 seniors. From these, four are selected to be interviewed by the local newspaper. Find the probability that no senior will be selected.

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