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How many products claim to freshen breath

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Reference no: EM131636396

Question: Nineteen different mouthwash products make the following claims: 12 claim to freshen breath, 10 claim to prevent gingivitis, 11 claim to reduce plaque, 6 claim to both freshen breath and reduce plaque, 5 claim to both prevent gingivitis and freshen breath, and 5 claim to both prevent gingivitis and reduce plaque.

a. How many products make all three claims?

b. How many products claim to freshen breath but do not claim to reduce plaque?

Reference no: EM131636396

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