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Mathematics
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A survey revealed that 31% of people are entertained by reading books, 39% are entertained by watching TV, and 30% are entertained by both books and TV. What is the probability that a person will be entertained by either books or TV?
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any thoughts about it?
I was thinking I had to add .31 and .39?
well, thats part of it, i was thinking more of the formula thats associated with it
P(AorB) = P(A) + P(B) - P(AandB)
In this case, It should be 40%
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Ok thank you that's what I had
goo dluck
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