Solve the Problem $$\text { If } n ( B ) = 24 , n ( A \cap B ) = 5 \text {, and } n ( A \cup B ) = 42 \text {, find } n ( A ) \text {. }$$

question 72

Multiple Choice

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

• A) 21
• B) 18
• C) 23
• D) 25

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