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2. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/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 than t boxes need to be bought ...

3. Form 4 - Wikipedia

   en.wikipedia.org/wiki/Form_4

   Form 4 is a United States SEC filing that relates to insider trading. Every director, officer and owner of more than 10 percent of a class of a particular company's equity securities registered under Section 12 of the Securities Exchange Act of 1934 must file with the United States Securities and Exchange Commission a statement of ownership ...

4. Near-field communication - Wikipedia

   en.wikipedia.org/wiki/Near-field_communication

   Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 centimetres (1.6 in) or less. NFC offers a low-speed connection through a simple setup that can be used for the bootstrapping of capable wireless connections. [2]

5. Buy one, get one free - Wikipedia

   en.wikipedia.org/wiki/Buy_one,_get_one_free

   Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Cotangent bundle - Wikipedia

   en.wikipedia.org/wiki/Cotangent_bundle

   Cotangent bundle. In mathematics, especially differential geometry, the cotangent bundle of a smooth manifold is the vector bundle of all the cotangent spaces at every point in the manifold. It may be described also as the dual bundle to the tangent bundle. This may be generalized to categories with more structure than smooth manifolds, such as ...

8. Renters are struggling more than homeowners in America’s ...

   www.aol.com/renters-struggling-more-homeowners...

   Renters who spend more than half of their household income on housing and utilities rose in 2022 to a new record high of 12.1 million, up 1.5 million from levels seen before the Covid-19 pandemic.

9. Fourth normal form - Wikipedia

   en.wikipedia.org/wiki/Fourth_normal_form

   Fourth normal form (4NF) is a normal form used in database normalization. Introduced by Ronald Fagin in 1977, 4NF is the next level of normalization after Boyce–Codd normal form (BCNF). Whereas the second , third , and Boyce–Codd normal forms are concerned with functional dependencies , 4NF is concerned with a more general type of ...