You select a family with four children. If M represents a male child and F a female child, the set of equally likely outcomes for the children's genders is {, FFFM, FFMF, FMFF, MFFF, MFFM, MFMF, MMFF, FFMM, FMFM, FMMF, FMMM, MFMM, MMFM, MMMF, }. Find the probability of selecting a family with exactly three female children. The probability of having exactly three female children is nothing.