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12 March, 10:07

On a spinner:

p (3) = 1/6 and the p (4) = 2/5

what is the probability of getting a 3 or 4

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Answers (1)
  1. 12 March, 10:53
    0
    For this you use the OR rule (which means you add both of the probabilities):

    1/3 + 2/5

    Make common denominators:

    5/15 + 6/15

    Add them:

    = 11/15
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