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Three groups of children contain (i) 3 girls and 1 boy; (ii) [#permalink]
10 Dec 2003, 05:17
Three groups of children contain (i) 3 girls and 1 boy; (ii) 3 girls and 3 boys; (iii) 2 boys and 1 girl. One child is selected at random from each group. Find the probability that the three selected children comprise of 1 girl and 2 boys.