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March 29, 2017

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a single ball is drawn from an urn containing 4 balls numbered 1 through 4. find the probability that the ball chosen is as follows: an even numbered ball or an odd numbered ball

  • algebra - ,

    obviously, prob = 1

  • algebra - ,

    Either-or probabilities are found by adding the individual probabilities.

    1/2 + 1/2 = 1

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