Must be a mistake. Your work looks right to me.
Unless there is some fan overlap.
If the Red Sox have 14 fans, the Pirates have 42 fans, and the Phillies have 25 fans, what is the probability that a randomly selected fan is not a Red Sox fan?
The total number of fans is 81, so I believe it would be 42 + 25 = 67/81 which is 82.7%.
However, the answer says it's 74%.
Could you please explain why?
Thank you.
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