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Suppose that 11 of a certain batch of calculators have a defective case and that 12 have defective batteries Also 5 have both a defective

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Suppose that 11 of a certain batch of calculators have a defective case and that 12 have defective batteries Also 5 have both a defective case and defective batteries A calculator is selected from the batch at random Find the probability that the calculator has a good case and good batteries The probability that the calculator has a good case and good batteries is Type an integer or a decimal

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