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  2. Coupon collector's problem - Wikipedia

    en.wikipedia.org/wiki/Coupon_collector's_problem

    Coupon collector's problem. 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 ...

  3. Harmonic series (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Harmonic_series_(mathematics)

    Definition and divergence. The harmonic series is the infinite series in which the terms are all of the positive unit fractions. It is a divergent series: as more terms of the series are included in partial sums of the series, the values of these partial sums grow arbitrarily large, beyond any finite limit.

  4. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    In probability theory, the birthday problem asks for the probability that, in a set of n randomly chosen people, at least two will share a birthday. The birthday paradox refers to the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox: it seems wrong at first ...

  5. Twelvefold way - Wikipedia

    en.wikipedia.org/wiki/Twelvefold_way

    This is vaguely comparable to the coupon collector's problem, where the process involves "collecting" (by sampling with replacement) a set of X coupons until each coupon has been seen at least once. In all surjective cases, the number of sets of choices is zero unless N ≥ X .

  6. Component (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Component_(graph_theory)

    Component (graph theory) In graph theory, a component of an undirected graph is a connected subgraph that is not part of any larger connected subgraph. The components of any graph partition its vertices into disjoint sets, and are the induced subgraphs of those sets. A graph that is itself connected has exactly one component, consisting of the ...

  7. Geometric distribution - Wikipedia

    en.wikipedia.org/wiki/Geometric_distribution

    The geometric distribution is the discrete probability distribution that describes when the first success in an infinite sequence of independent and identically distributed Bernoulli trials occurs. Its probability mass function depends on its parameterization and support. When supported on , the probability mass function is where is the number ...

  8. Wikipedia : Reference desk/Archives/Mathematics/2016 January 7

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    1.1 Coupon collector problem with drawing the coupons in batches of k coupons ... If the n-th input is set to off, the n-th output will be zero. Beyond that, I ...

  9. Talk:Coupon collector's problem - Wikipedia

    en.wikipedia.org/wiki/Talk:Coupon_collector's...

    It is stated that "[The coupon collector's problem] asks the following question: If each box of a brand of 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 to collect all n coupons?" However, this question is not answered in the solution section.