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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-eligible converter box - Wikipedia

   en.wikipedia.org/wiki/Coupon-eligible_converter_box

   A coupon-eligible converter box (CECB) was a digital television adapter that met eligibility specifications for subsidy "coupons" from the United States government.The subsidy program was enacted to provide terrestrial television viewers with an affordable way to continue receiving free digital terrestrial television services after the nation's television service transitioned to digital ...

4. 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 ...

5. International reply coupon - Wikipedia

   en.wikipedia.org/wiki/International_reply_coupon

   International reply coupon. An international reply coupon (IRC) is a coupon that can be exchanged for one or more postage stamps representing the minimum postage for an unregistered priority airmail letter of up to twenty grams sent to another Universal Postal Union (UPU) member country. IRCs are accepted by all UPU member countries.

6. Ration stamp - Wikipedia

   en.wikipedia.org/wiki/Ration_stamp

   Ration stamps for sugar, buckwheat, vegetable oil, rice, and pasta, provided by the Artsakh government in January 2023. A ration stamp, ration coupon, or ration card is a stamp or card issued by a government to allow the holder to obtain food or other commodities that are in short supply during wartime or in other emergency situations when ...

7. en.wikipedia.org

   en.wikipedia.org/wiki/Raid-shadow-legends-promo...

   en.wikipedia.org