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. 1st 2nd 3rd o boy- boy- boy boy - boy - gir boy - girl - boy boy - girl - girl girl - boy - boy girl - boy - giri girl - girl - boy girl - girl - girl What is the probability of exactly 3 girls out of three children? Type an integer or a simplified fraction.)

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