Math, Physics and Chemistry books

Discrete Mathematics Level 1

On a table, there are a total of 30 distinct books: 9 math books, 10 physics books, and 11 chemistry books.

What is the probability of getting a book that is not a math book?

0

\frac{9}{30}

\frac{10}{30}

\frac{11}{30}

\frac{19}{30}

\frac{20}{30}

\frac{21}{30}

1