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  2. Coupon - Wikipedia

    en.wikipedia.org/wiki/Coupon

    Believed to be the first coupon ever, this ticket for a free glass of Coca-Cola was first distributed in 1888 to help promote the drink. By 1913, the company had redeemed 8.5 million tickets. [6] Coca-Cola's 1888-issued "free glass of" is the earliest documented coupon. [6] [7] Coupons were mailed to potential customers and placed in magazines ...

  3. A/B testing - Wikipedia

    en.wikipedia.org/wiki/A/B_testing

    The company then monitors which campaign has the higher success rate by analyzing the use of the promotional codes. The email using the code A1 has a 5% response rate (50 of the 1,000 people emailed used the code to buy a product), and the email using the code B1 has a 3% response rate (30 of the recipients used the code to buy a product). The ...

  4. Dish Network - Wikipedia

    en.wikipedia.org/wiki/Dish_Network

    DISH Network L.L.C., often referred to as DISH, an abbreviation for Digital Sky Highway, [1] is an American provider of satellite television and IPTV services and wholly owned subsidiary of EchoStar Corporation.

  5. Zero-coupon bond - Wikipedia

    en.wikipedia.org/wiki/Zero-coupon_bond

    Zero coupon bonds have a duration equal to the bond's time to maturity, which makes them sensitive to any changes in the interest rates. Investment banks or dealers may separate coupons from the principal of coupon bonds, which is known as the residue, so that different investors may receive the principal and each of the coupon payments.

  6. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    Nicolas Chuquet used the term progression naturelle (natural progression) in 1484. [20] The earliest known use of "natural number" as a complete English phrase is in 1763. [21] [22] The 1771 Encyclopaedia Britannica defines natural numbers in the logarithm article. [22] Starting at 0 or 1 has long been a matter of definition.

  7. B - Wikipedia

    en.wikipedia.org/wiki/B

    B or b is the second letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.Its name in English is bee (pronounced / ˈ b iː /), plural bees.

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