The NBA Finals of basketball is played in a best-of-seven series. The number of games necessary to decide a winner can range from four to seven. Wikipedia lists the NBA Finals winners and number of games played per series. The following table provides the number of series that were decided in 4, 5, 6, or 7 games for the NBA Finals from 1950–2012. Games required Frequency
For one of these series selected at random, let

A = event that the NBA Finals was decided in five games.

B = event that the NBA Finals was decided in at most five games.

C = event that the NBA Finals was decided in at least five games.

Describe the following events in words, and determine the number of outcomes (NBA Finals) that constitute each event.

a. (B & C) 

b. (B or C) 

c. (not A)

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Games required Frequency 8 4567 15 24 16