a) At Leratong Clinic in the outskirts of Maseru, everyday there are healthy new born babies born. The midwife’s analysis have concluded that out of 3 babies born, 1 is a boy. On any given day if 7 new born babies are chosen at random
i) What is the probability that 2 of the babies will be a boys? [3 Marks]
ii) What is the probability that at least 3 babies will be boys?



Answer :

write down all possible factors for each of the following expression 3a b^2

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