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OpenStudy (anonymous):
Events A and B are disjointed. P(A) = 1/10 P(B) = 3/10 Find P(A or B).
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OpenStudy (anonymous):
Just add the two probabilities.
OpenStudy (anonymous):
4/10 = 2/5
OpenStudy (anonymous):
Right - this is identical to a question you asked a few minutes ago.
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