AIR MATH

Math Question

In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probability that a student chosen randomly from the class plays a sport or an instrument?
\begin{tabular}{|c|c|c|}
\hline & Plays an instrument & Does not play an instrument \\
\hline Plays a sport & 3 & 8 \\
\hline Does not play a sport & 5 & 12 \\
\hline
\end{tabular}
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