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There are 5 pickup trucks, 10 two-door cars, and 6 four-door cars in a parking lot. A represents the event that a randomly selected vehicle from this parking lot is a four-door car. What is the probability of the complement of event A? Enter your answer as a fraction, in simplified form, in the box.

Respuesta :

the answer is
6
21 becasue you add all the cars up and put them under the number of four dour cars