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2. 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 ...

3. Missing dollar riddle - Wikipedia

   en.wikipedia.org/wiki/Missing_dollar_riddle

   So, the three guests' cost of the room, including the bellhop's tip, is $27. Each of the 3 guests has $1 in his pocket, totaling $3. When added to the $27 revised cost of the room (including tip to the bellhop), the total is $30. To obtain a sum that totals to the original $30, every dollar must be accounted for, regardless of its location.

4. 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 ...

5. 2 No-Brainer Payment Network Stocks to Buy With $1,000 ... - AOL

   www.aol.com/2-no-brainer-payment-network...

   If you’re worried you’ve already missed your chance to invest, now is the best time to buy before it’s too late. And the numbers speak for themselves: Amazon: if you invested $1,000 when we ...

6. Future of Elon Musk and Tesla are on the line this week as ...

   www.aol.com/news/future-elon-musk-tesla-line...

   If Tesla shareholders vote against restoring Elon Musk's $44.9 billion pay package Thursday, the CEO could deliver on threats to take artificial intelligence research to one of his other companies.

7. 1989 Tiananmen Square protests and massacre - Wikipedia

   en.wikipedia.org/wiki/1989_Tiananmen_Square...

   1989 Tiananmen Square protests and massacre Part of the Cold War, the Revolutions of 1989 and the Chinese democracy movement Protesters in Tiananmen Square on 2 June (top), and tanks in Beijing in July (bottom) Date Initial protests: 15 April – 4 June 1989 (1 month, 2 weeks and 6 days) Massacre: 3–4 June 1989 (1 day); 35 years ago Location Beijing, China and 400 cities nationwide Tiananmen ...