Question

At the dog park, 2 dogs are black with spots, 5 dogs are white with spots, 1 dog is solid white, and 4 dogs are solid black. What is the probability of a dog being black or with spots?

Answer 1

Total dogs = 2 + 5 + 1 + 4 = 12
Black or With Spots = 4 + 2 + 5 = 7
P(Black or with spots) = 11/12

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Answer: 11/12
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Answer 2

its 11/12 , you need to divide the "wanted results" (every dog which is either black, with spots or both ) by every every possible result ( all dogs ). so 11/12=0.92