Calculate probability of a student liking summer or winter.
\( \begin{array}{l}\textbf{In a survey of 80 students, 50 like summer,} \\ \textbf{40 like winter, and 20 like both. What is the} \\ \textbf{probability that a student likes either summer or winter?}\end{array} \)
Choose one option:
Add counts, subtract overlap, divide by total students.
Use inclusion-exclusion principle to avoid double-counting students who like both seasons.
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