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A survey of 1200 people in a certain city indicates that 840 own microwaveovens, 740 own DVDplayers, and 590 own microwave ovens and DVD players.
A survey of 1200 people in a certain city indicates that 840 own microwaveovens, 740 own DVDplayers, and 590 own microwave ovens and DVD players.
(A) How many people in the survey own either a microwave oven or a DVDplayer?
(B) How many own neither a microwave oven nor a DVDplayer?
(C) How many own a microwave oven and do not own a DVDplayer?
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