Calculate probability of a student liking rock or pop music.
\( \begin{array}{l}\textbf{In a survey of 100 students, 60 like rock,} \\ \textbf{40 like pop, and 25 like both. What is the} \\ \textbf{probability that a student likes either rock or pop music?}\end{array} \)
Choose one option:
Add counts, subtract overlap, divide by total students.
Use inclusion-exclusion to avoid double-counting students who like both genres.
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