a farm house has a parking space of 20 cars. 5 car with number plate 'dl' 6cars with number plate'hr'and 4 cars with number plate'up' are parked inside find the probability that the fast cars to exit the formhouse is having the number plates starting with 'hr'
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hr car = 6 car
total in farm house = 4+6+5=15
probability of car with no. plate hr = 6/15
total in farm house = 4+6+5=15
probability of car with no. plate hr = 6/15
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