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5 March, 13:59

Find P (A or B), if events A and B are overlapping.

P (A) = 11/18

P (B) = 5/18

p (A and B) = 2/18

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  1. 5 March, 17:45
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    The answer is 7/9

    P (A or B) = P (A) + P (B) - P (A and B)

    P (A) = 11/18

    P (B) = 5/18

    p (A and B) = 2/18

    P (A or B) = 11/18 + 5/18 - 2/18 = (11 + 5 - 2) / 18 = 14/18 = 7/9
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