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28 October, 18:40

The probability that event M will not occur is 0.8 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event Rwill occur?

a. 1/5

b. 2/5

c. 3/5

d. 4/5

e. 12/25

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Answers (1)
  1. 28 October, 19:00
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    C. 3/5

    Step-by-step explanation:

    Probability that M will occur = 1-0.8=0.2=1/5

    Probability that R will occur = 1-0.6=0.4=2/5

    Probability that either of them will occur = 1/5 + 2/5 = 3/5
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