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2. 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 ...

3. Counterfeit banknote detection pen - Wikipedia

   en.wikipedia.org/wiki/Counterfeit_banknote...

   A counterfeit banknote detection pen, used to detect fake banknotes. A counterfeit banknote detection pen is a pen used to apply an iodine-based ink to banknotes in an attempt to determine their authenticity. The ink reacts with starch in wood-based paper to create a black or blue mark but the paper in a real bill contains no starch, so the pen ...

4. Shortcuts.com has printable coupons - AOL

   www.aol.com/news/2010-05-04-shortcuts-com-has...

   The online grocery coupon site Shortcuts.com now has printable coupons. Previously, you could only add coupons electronically to your store loyalty card, which is still a cool feature. Shortcuts ...

5. 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 ...

6. The best E Ink tablets for 2024 - Engadget

   www.engadget.com/best-e-ink-tablet-130037939.html

   TCL NXTPAPER 14 Pro. We got to spend some time with TCL’s latest E Ink-like tablet at CES, the NXTPAPER 14 Pro. Using the company’s NXTPAPER 3.0 technology, the device isn’t precisely an E ...

7. Epic's Mega Sale is back with discounts, coupons and a free ...

   www.engadget.com/epic-games-store-mega-sale-2021...

   The sale runs through to June 17th. The Epic Games Store's Mega Sale is back, and so is the Epic Coupon. For those who need a refresher on how the system works, here it is. Each time you buy a ...