If $n ( A ) = 40$ , $n ( B ) = 21$ , and $n ( A \cap B ) = 3$ , find $n ( A \cup B )$ .
$n ( A \cup B ) =$ __________

Name: If $n ( A ) = 40$ , $n ( B ) = 21$ , and $n ( A \cap B ) = 3$ , find $n ( A \cup B )$ . $n ( A \cup B ) =$ __________
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Question

If $n ( A ) = 40$ , $n ( B ) = 21$ , and $n ( A \cap B ) = 3$ , find $n ( A \cup B )$ .
​ $n ( A \cup B ) =$ __________

Quizplus · Accepted Answer

The Answer of If $n ( A ) = 40$ , $n ( B ) = 21$ , and $n ( A \cap B ) = 3$ , find $n ( A \cup B )$ .
​ $n ( A \cup B ) =$ __________

If n(A)=40n ( A ) = 40n(A)=40 n(B)=21n ( B ) = 21n(B)=21

If $n ( A ) = 40$ $n ( B ) = 21$