If $n ( A ) = 110$ $n ( A \cup B ) = 180$

question 80

Multiple Choice

If $n ( A ) = 110$ , $n ( A \cup B ) = 180$ , and $n ( A \cap B ) = 45$ , find $n ( B )$ .

• A)25
• B) 115
• C) 135
• D) 70
• E) 155

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