A person wants to go a movie. Help him to choose the correct number of different options he have with the following data:
Mall: Mall A, Mall B, Mall C
Movies: Movie A, Movie B
Ticket rate: Silver, Gold, Diamond
A
81
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B
18
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C
81
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D
9
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Solution
The correct option is B 18 Number of choices for selecting a mall = 3
Number of choices for selecting a movie = 2
Number of choices for selecting a ticket = 3
Fundamental principle of counting:
An event, M, has “m” possible outcomes. An event, N, has “n” possible outcomes. The total number of outcomes of event M followed by event N is m × n.
Total number of all possible choices will be = 3 × 2 × 3 = 18.