probability

A golf ball is selected at random from a golf bag. If the bag contains 2 orange balls, 5 red balls, and 18 brown balls, find the probability of the event. That the golf ball will be orange or red.

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  1. #of orange balls=2
    #of red balls = 5
    Total number of balls = 25
    P(orange ∪ Red)
    =P(orange)+P(red)-P(orange∩red)
    =2/25+5/25-0
    =7/25

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