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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. Optical wireless communications - Wikipedia

   en.wikipedia.org/wiki/Optical_Wireless...

   Optical wireless communication (OWC) refers to transmission in unguided propagation media through the use of optical carriers: visible, infrared (IR), and ultraviolet (UV) radiation. Signalling through beacon fires, smoke, ship flags and semaphore telegraph can be considered the historical forms of OWC. [3]

4. 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 ...

5. Wireless (band) - Wikipedia

   en.wikipedia.org/wiki/Wireless_(band)

   Wireless was formed in 1976 by bassist Allan Marshall, guitarist Steve McMurray and drummer Glenn Beatson, who had played together in an Australian pop music band, Autumn. [1] [2] They released a self-titled album on the Atlantic label which included some original songs.

6. Wireless (TV series) - Wikipedia

   en.wikipedia.org/wiki/Wireless_(TV_series)

   Wireless is a 2020 American survival thriller television series. It stars Tye Sheridan , Lukas Gage , Francesca Reale , Mace Coronel, Sydney Park and Andie MacDowell . Steven Soderbergh serves as an executive producer.

7. Digital coupon - Wikipedia

   en.wikipedia.org/wiki/Digital_coupon

   Digital coupons (also known as e-coupons, e-clips or clipped deals) are the digital analogue of paper coupons which are used to provide customers with discounts or gifts in order to attract the purchase of some products. Mostly, grocery and drug stores offer e-coupon services in loyalty program events. Even though there are still traditional ...