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2. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/Coupon_collector's_problem

   Let time T be the number of draws needed to collect all n coupons, and let t i be the time to collect the i-th coupon after i − 1 coupons have been collected. Then T = t 1 + ⋯ + t n {\displaystyle T=t_{1}+\cdots +t_{n}} .

3. List of presidents of the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_Presidents_of_the...

   The first president, George Washington, won a unanimous vote of the Electoral College. [4] Grover Cleveland served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the number of presidencies and the number of individuals who have served as president.

4. For the First Time (2008 film) - Wikipedia

   en.wikipedia.org/wiki/For_the_First_Time_(2008_film)

   For the First Time is a 2008 Philippine romantic drama film released by Star Cinema. It stars Richard Gutierrez and KC Concepcion . The film was shot mainly in the Philippines and Santorini , Greece .

5. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

6. Time travel - Wikipedia

   en.wikipedia.org/wiki/Time_travel

   The first page of The Time Machine published by Heinemann. Time travel is the hypothetical activity of traveling into the past or future. Time travel is a widely recognized concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a hypothetical device known as a time machine.

7. First Time Female Director - Wikipedia

   en.wikipedia.org/wiki/First_Time_Female_Director

   First Time Female Director is a 2023 American film directed, written, produced by and starring Chelsea Peretti. It co-stars Blake Anderson , Kate Berlant , Megan Mullally , Benito Skinner , Megan Stalter , Jak Knight , Max Greenfield , and Amy Poehler .