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  • Perplex
    IB Math AIHL
    /
    Probability
    /

    Problem Bank

    [Maximum mark: 9]

    Consider the events ​A​ and ​B. It is given that ​P(A)=0.4​ and ​P(A∪B)=0.8.

    Find ​P(B)​ in the case where

    1. ​A​ and ​B​ are mutually exclusive,

      [3]

      To earn a crown, get your answer ready before you reveal the options!

    2. ​A​ and ​B​ are independent.

      [3]
    3. ​P(A∣B)=0.2​

      [3]

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