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6 July, 07:51

If P (A or B) = 2/5, P (B) = 1/4 and

P (A and B) = 1/10 find P (A)

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  1. 6 July, 08:14
    0
    p (a) = - 3/20

    Step-by-step explanation:

    p (a + b) = p (a) + p (b)

    1/10 = p (a) + 1/4

    1/10 - 1/4 = p (a)

    p (a) = - 3/20
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