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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. Buy one, get one free - Wikipedia

   en.wikipedia.org/wiki/Buy_one,_get_one_free

   Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...

4. Square (financial services) - Wikipedia

   en.wikipedia.org/wiki/Square_(financial_services)

   Square (financial services) Square is a financial services platform by Block, Inc. for small and medium-sized businesses. [1] [2] It enables accepting credit card payments using smartphones as POS registers, and facilitates various business operations. As of 2023, Square reports 4 million merchant clients and an annual payment value of US$ 210 ...

5. 1 + 2 + 3 + 4 + ⋯ - Wikipedia

   en.wikipedia.org/wiki/1_%2B_2_%2B_3_%2B_4_%2B_%E...

   Asymptotic behavior of the smoothing. The y-intercept of the parabola is − + 1 / 12.. The method of regularization using a cutoff function can "smooth" the series to arrive at − + 1 / 12.

6. Square packing - Wikipedia

   en.wikipedia.org/wiki/Square_packing

   Square packing in a square is the problem of determining the maximum number of unit squares (squares of side length one) that can be packed inside a larger square of side length . If is an integer, the answer is but the precise – or even asymptotic – amount of unfilled space for an arbitrary non-integer is an open question. [1] The smallest ...

7. Dr. Scholl’s Time Off Sneakers went viral on TikTok and they ...

   www.aol.com/lifestyle/these-super-comfy-dr...

   Dr. Scholl's Time Off Sneaker. $70 $100 Save $30. People have called them "literally the comfiest sneaker" they've ever worn. For us, this taupe pair is tops. $70 at Amazon.

8. 1 − 2 + 3 − 4 + ⋯ - Wikipedia

   en.wikipedia.org/wiki/1_%E2%88%92_2_%2B_3_%E2%88...

   The idea becomes clearer by considering the general series 1 − 2x + 3x 2 − 4x 3 + 5x 4 − 6x 5 + &c. that arises while expanding the expression 1 ⁄ (1+x) 2, which this series is indeed equal to after we set x = 1.

9. 3 Times Square - Wikipedia

   en.wikipedia.org/wiki/3_Times_Square

   3 Times Square. /  40.75667°N 73.98694°W  / 40.75667; -73.98694. 3 Times Square, also known as the Thomson Reuters Building, is a 30-story skyscraper at Times Square in the Midtown Manhattan neighborhood of New York City. Located on Seventh Avenue between 42nd and 43rd Street, the building measures 555 feet (169 m) to its roof and 659 ...