<PRE><B>Question 269628</B>
A boxed DVD set contains 21 movies from a certain studio. 
Twelve of them are comedies, six are thrillers, and three are dramas. 
What is the probability that one DVD chosen from the box at random is a thriller or a drama? Show step by step work! Give answer as a fraction in lowest terms.
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P(thriller or drama) = P(thriller) + P(drama)
= 6/21 + 3/21
= 9/21
= 3/7
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cheers,
Stan H.
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