We need to find the following probability:
[tex]P(\text{RAINFOREST }\cup MATCHES)[/tex]which is equal to
[tex]P(\text{RAINFOREST }\cup MATCHES)=P(\text{RAINFOREST})+P(MATCHES)-P(\text{RAINFOREST }\cap MATCHES)[/tex]from our table, we get
[tex]P(\text{RAINFOREST }\cup MATCHES)=\frac{8}{12}+\frac{6}{12}-\frac{4}{12}[/tex]then, the answer is
[tex]P(\text{RAINFOREST }\cup MATCHES)=\frac{10}{12}=\frac{5}{6}[/tex]so, the answer is 5/6