Step 1 :The outcomes in F or G are found by taking the union of the two sets F and G. The union of two sets is the set of elements that are in either set, or in both. So, the outcomes in F or G are \(\{8,9,10,11,12,13,14,15\}\).
Step 2 :The probability of F or G is found by counting the number of outcomes in F or G and dividing by the total number of outcomes in the sample space. So, the probability of F or G is \(\frac{8}{12} = 0.667\).
Step 3 :The probability of F or G using the general addition rule is found by adding the probabilities of F and G and subtracting the probability of both F and G. So, the probability of F or G using the general addition rule is also \(0.667\).
Step 4 :Final Answer: The outcomes in F or G are \(\boxed{\{8,9,10,11,12,13,14,15\}}\). The probability of F or G by counting the number of outcomes in F or G is \(\boxed{0.667}\). The probability of F or G using the general addition rule is also \(\boxed{0.667}\).