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Questions and Answers
Which percentage of people in the group like both tea and coffee?
Which percentage of people in the group like both tea and coffee?
- 70%
- 60%
- 50%
- 40% (correct)
What is the cardinality of the set of people who like tea only?
What is the cardinality of the set of people who like tea only?
- 10%
- 40%
- 20%
- 30% (correct)
What is the value of x, representing the total number of people in the group?
What is the value of x, representing the total number of people in the group?
- 600
- 200
- 400 (correct)
- 800
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Study Notes
Understanding the Scenario
- A group of people is being surveyed for their preferences on tea and coffee.
Key Questions
- The percentage of people who like both tea and coffee is unknown and needs to be calculated.
- The cardinality of the set of people who like tea only is unknown and needs to be determined.
- The total number of people in the group (x) is unknown and needs to be found.
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