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In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be bought ...
Mexico, [a] [b] officially the United Mexican States, [c] is a country in the southern portion of North America. Covering 1,972,550 km 2 (761,610 sq mi), [11] it is the world's 13th largest country by area; with a population of almost 130 million, it is the 10th most populous country and has the most Spanish speakers in the world. [12] Mexico ...