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Mathematics 54 Online
OpenStudy (anonymous):

Two common sources of nicotine are cigarettes and cigars. Suppose that 35% of the adults in the United States smoke cigarettes but not cigars and 10% smoke both cigarettes and cigars. Find the probability that a randomly selected adult does not smoke cigarettes. (Hint: Draw a Venn diagram.)

OpenStudy (anonymous):

is it 55%

OpenStudy (anonymous):

how did you get 55%?

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