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8. In an interview of 50 math majors,
12 liked calculus and geometry
18 liked calculus but not algebra
4 liked calculus, algebra, and geometry
25 liked calculus
15 liked geometry
10 liked algebra but neither calculus nor geometry
2 liked geometry and algebra but not calculus.
Of those surveyed, how many liked calculus and algebra?

  • math -

    If you only interviewed 50 math majors, how do you get over 80 in the various categories?

    Divide the 4 that liked calculus, algebra, and geometry by whatever your total sample is.

    I hope this helps.

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