1. A complete cycle of a traffic lights takes 60 seconds. During each cycle the light is green for 25 seconds, yellow for 5 seconds and red for 30 seconds. At a randomly chosen time, the probability that the light will not be green is:





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  • By: anil on 05 May 2019 02.44 am
    probability that the light is not green=probablity that the light is green or red=(30 +5)/60=7/12
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