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Doctors Medicines MCQs Q&A

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Here, Number of people who don't have cell phone = 100-80 = 20 ∴Number of people who don't have DVD player = 100 75 = 25 ∴Number of people who don't have MP3 player = 100 - 55 = 45 ∴Number of people who don't have All the three devices are = 20 + 25 + 45 = 90 Here, the number of people who have MP3 player = 55=x As all three devices are used by them. ∴Number of people who have all the three devices is = 100 - 90 = 10 ∴y = 10 ∴Required (x - y) = 55 - 10 = 45

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