Your friend is pregnant with non-identical triplets. Calculate the probability of each possible combination of the number of sons and daughters that she could have. Note that the birth order is not specified. Express all answers as fractions reduced to the lowest terms, with no spaces (e.g., 1/6). The probability that she will have 3 sons is  . The probability that she will have 3 daughters is  . The probability that she will have 2 sons and 1 daughter is  . The probability that she will have 1 son and 2 daughters is

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