From a survey of 100 college students, a marketing research company found that 70 students owned iPods, 40 owned cars, and 20 owned both cars and iPods.
How many students owned either a car or an iPod (but not both)?
How many students do not own either a car or an iPod?
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90 students owned either a car or an iPod (but not both). 10 students do not own either a car or an iPod.
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