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If a person draws 3 cards from a deck without replacing them what is the probability that at least one of the cards is a face card? Is x + 8 the same as 8 + x? What is 24w^9-12w^7+9w^3/3w^3? How many atoms of Ca are in 2000g of CaCl2? Two dice are tossed, what is the probability of not getting a sum of five?
written as a fraction?