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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. Coupon - Wikipedia

   en.wikipedia.org/wiki/Coupon

   Coupon. In marketing, a coupon is a ticket or document that can be redeemed for a financial discount or rebate when purchasing a product. Customarily, coupons are issued by manufacturers of consumer packaged goods [1] or by retailers, to be used in retail stores as a part of sales promotions. They are often widely distributed through mail ...

4. United States Treasury security - Wikipedia

   en.wikipedia.org/wiki/United_States_Treasury...

   Traditionally, the government borrowed from other countries, but there were no other countries from which to borrow from in 1917. [3] The Treasury raised funding throughout the war by selling $21.5 billion in 'Liberty bonds.' These bonds were sold at subscription, where officials created coupon price and then sold it at par value. At this price ...

5. Collecting coupons — A mathematical approach - ed

   files.eric.ed.gov/fulltext/EJ744035.pdf

   In our problem, the first packet purchased will always contain one of the coupons. For each subsequent packet, there is a chance that the coupon found will be different than the first, and so from (1) the expected number of packets that must be purchased to find a different coupon is Once two coupons in the set are obtained, there is now a

6. Zero-coupon bonds: What they are, pros and cons, tips to invest

   www.aol.com/finance/zero-coupon-bonds-pros-cons...

   While there are many different types of bonds, ... Zero-coupon bonds can even be created from standard bonds. One type of zero-coupon bonds is strip bonds from the U.S. Treasury, or STRIPS ...

7. Airline ticket - Wikipedia

   en.wikipedia.org/wiki/Airline_ticket

   The airline ticket may be one of two types: a paper ticket, which comprises coupons or vouchers; and an electronic ticket (commonly referred to as an e-ticket). The ticket, in either form, is required to obtain a boarding pass during check-in at the airport. Then with the boarding pass and the attached ticket, the passenger is allowed to board ...