If $n ( A ) = 40 , n ( B ) = 117$ and $n ( A \cup B ) = 137$, what do you know about $n ( A \cap B )$ ?
A) $n ( A \cap B ) = 10$
B) 60
C) $n ( A \cap B ) = 20$
D) $n ( A \cap B ) = 22$

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The Answer of If $n ( A ) = 40 , n ( B ) = 117$ and $n ( A \cup B ) = 137$, what do you know about $n ( A \cap B )$ ?
A) $n ( A \cap B ) = 10$
B) 60
C) $n ( A \cap B ) = 20$
D) $n ( A \cap B ) = 22$

If n(A)=40,n(B)=117n ( A ) = 40 , n ( B ) = 117n(A)=40,n(B)=117

If $n ( A ) = 40 , n ( B ) = 117$