Asked by bart

If P(A) =7/36, P(B) =1/6, and P(A and B) = 0, what can you say about P(A or B)?

Would the answer be 13/16? I am just guessing. I am assuming we have to find a commond denominator and then add?
Answered by Damon
If the probability of both together is 0 (no intersection), then they are independent of each other. Then indeed you just add the two. However I get 13/36.
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