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jmc

counting and probability junior

Problem

In a town of adults, every adult owns a car, motorcycle, or both. If adults own cars and adults own motorcycles, how many of the car owners do not own a motorcycle?
(A)
(B)
(C)
(D)
Solution
By PIE, the number of adults who own both cars and motorcycles is Out of the car owners, of them own motorcycles and of them don't.
Final answer
D