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In a survey of 450 households regarding ownership of HDTVs and DVD players, the following data were obtained. 315households own one or more HDTVs. 165households
In a survey of450households regarding ownership of HDTVs and DVD players, the following data were obtained.
315households own one or more HDTVs.
165households own one or more HDTVs and one or more DVD players.
18households do not own an HDTV or a DVD player.
How many households only own one or more DVD players?
I have tried multiple ways and cannot seem to figure out what method.
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