To the right are the outcomes that are possible when a couple has three children. Assume that boys and girls are equally likely, so that the eight simple events are equally likely. Find the probability that when a couple has three children, there are exactly 3 girls. What is the probability of exactly 3 girls out of three children? (Type an integer or a simplified fraction.) 1st 2nd 3rd boy boy boy boy boy girl boy girl boy boy girl girl girl - boy-boy girl - boy - girl girl-girl-boy girl-girl - girl

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