Solve the Problem $n ( B ) = 24 , n ( A \cap B ) = 5$

question 52

Multiple Choice

Solve the problem.
-If $n ( B ) = 24 , n ( A \cap B ) = 5$ , and $n ( A \cup B ) = 42$ , find $n ( A )$ .

• A) 21
• B) 18
• C) 23
• D) 25

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