Practice Set - 18
1. B
2. C
3. C
85 children went to an amusement park, where they could ride on the merry-go-round, roller coaster and wheel. It was known that 20 of them took all the three rides, and 55 of them took at least two of the three rides. Each ride cost Rs. 1, and the total receipt of the amusement park from these children was
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