Question 465267
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Hi,
5 roast beef and 4 ham sandwiches orders, NINE in all
2 selected out of the bag
 P(both roast beef) = 5/9*4/8 = 20/72 = 5/18
 P(both roast beef OR both ham) = P(both roast beef) + P(ham)
                                = 5/18 + 4/9*3/8 = 5/18 + 12/72 = 8/18