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There are three famous aromatic perfumes offered by a cosmetic company at a shop. 40 customers like perfume 1, 30 like perfume 2 and 40 like perfume 3. 10 likes all the three perfumes. 20 likes at least two of these. How many people liked only one perfume?

There are three famous aromatic perfumes offered by a cosmetic company at a shop. 40 customers like perfume 1, 30 like perfume 2 and 40 like perfume 3. 10 likes all the three perfumes. 20 likes at least two of these. How many people liked only one perfume? Correct Answer 60

Calculation:

⇒ 110 – 

⇒ 110 –

⇒ 110 – 50

⇒ 60

∴ People liked only one perfume is 60

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