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Possibility of simple and compound events.

A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has?

a) A TV but no refrigerator?

b) A TV or a refrigerator, but not both?

c) Neither a TV nor a refrigerator?

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