A survey of the last 105 cars that have been brought to an automobile dealership for repair produced the following data.
If 1 cars had all three repairs performed, How many had...
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a) Number of cars with exactly one of the repairs done = 28 brake repairs+21 exhaust repairs+ 13 transmission repairs = 28+21+13= 62
b) total number of cars =105
total cars repaired = 28+21+13+8+6+3+1=80
number of cars without any repair =105-80 =25
c) Number of cars with exactly two repairs = 8+6+3 = 17
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