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2. International reply coupon - Wikipedia

   en.wikipedia.org/wiki/International_reply_coupon

   US Postal Service International Reply Coupon 1978. International reply coupons [1] (in French, Coupons-Réponse Internationaux) are printed in blue ink on paper that has the letters "UPU" in large characters in the watermark.

3. Rationing in the United Kingdom - Wikipedia

   en.wikipedia.org/wiki/Rationing_in_the_United...

   Until the issuing of Clothing Coupon books for 1942-43, consumers were to surrender unused margarine coupons from their food ration coupon book when buying clothing. [44] Initially people were allocated 66 points for clothing per year; in 1942, this was cut to 48, in 1943 to 36, and in 1945–1946 to 24.

4. Digital coupon - Wikipedia

   en.wikipedia.org/wiki/Digital_coupon

   7-Eleven e-coupon from Taiwan. 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.

5. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/Coupon_collector's_problem

   Graph of number of coupons, n vs the expected number of trials (i.e., time) needed to collect them all, E (T ) In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests.

6. Coupon (PWB) - Wikipedia

   en.wikipedia.org/wiki/Coupon_(PWB)

   A coupon or test coupon is a printed circuit board (PCB) used to test the quality of a printed wiring board (PWB) fabrication process. Test coupons are fabricated on the same panel as the PWBs, typically at the edges. Coupons are then inspected to ensure proper layer alignment, electrical connectivity, and cross sectioned to inspect internal ...

7. AOL Mail Help - AOL Help

   help.aol.com/products/new-aol-mail

   You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.