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21 May, 05:44

A sample of 100 wood and 100 graphite tennis rackets are taken from the warehouse. If 15 wood and 20 graphite are defective and one racket is randomly selected from the sample, find the probability that the racket is wood or defective.

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  1. 21 May, 05:59
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    Probability Wood is 100/200 and the Probability defective would be 35/200

    Probability for both would just be 15/200

    (100+35-15) / 200 = (120/200)

    Let me know If I'm right.
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Home » Mathematics » A sample of 100 wood and 100 graphite tennis rackets are taken from the warehouse. If 15 wood and 20 graphite are defective and one racket is randomly selected from the sample, find the probability that the racket is wood or defective.
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