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Digital SAT
Digital SAT Mathematics - Calculator Section

Probability of Favorite Hobbies in a Survey

Hard Problem Solving And Data Analysis Probability And Statistics

A class of 40 students participated in a survey about their favorite hobbies. The results are as follows:

  • 20 students enjoy playing sports
  • 15 students enjoy reading books
  • 10 students enjoy hiking
  • 5 students enjoy both playing sports and reading books

If a student is chosen at random, what is the probability that the student either enjoys reading books or enjoys playing sports?

Hint

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