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2. Bill Gates - Wikipedia

   en.wikipedia.org/wiki/Bill_Gates

   In June 2018, Gates offered free ebooks, to all new graduates of U.S. colleges and universities, [162] and in 2021, offered free ebooks, to all college and university students around the world. [163] [164] The Bill And Melinda Gates Foundation partially funds OpenStax, which creates and provides free digital textbooks. [165]

3. Matrix (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Matrix_(mathematics)

   Matrix (mathematics) An m × n matrix: the m rows are horizontal and the n columns are vertical. Each element of a matrix is often denoted by a variable with two subscripts. For example, a2,1 represents the element at the second row and first column of the matrix. In mathematics, a matrix ( pl.: matrices) is a rectangular array or table of ...

4. Math 55 - Wikipedia

   en.wikipedia.org/wiki/Math_55

   Math 55 is a two-semester freshman undergraduate mathematics course at Harvard University founded by Lynn Loomis and Shlomo Sternberg. The official titles of the course are Studies in Algebra and Group Theory (Math 55a) [ 1] and Studies in Real and Complex Analysis (Math 55b). [ 2] Previously, the official title was Honors Advanced Calculus and ...

5. AOL Mail is free and helps keep you safe.

   mail.aol.com/?rp=webmail-std/en-us/basic

   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563. Should you need additional assistance we have experts available around the clock at 800-730-2563.

6. Statistical hypothesis test - Wikipedia

   en.wikipedia.org/wiki/Statistical_hypothesis_test

   This ensures that the hypothesis test maintains its specified false positive rate (provided that statistical assumptions are met). [35] The p-value is the probability that a test statistic which is at least as extreme as the one obtained would occur under the null hypothesis. At a significance level of 0.05, a fair coin would be expected to ...

7. Massive open online course - Wikipedia

   en.wikipedia.org/wiki/Massive_open_online_course

   A massive open online course ( MOOC / muːk /) or an open online course is an online course aimed at unlimited participation and open access via the Web. [ 1] In addition to traditional course materials, such as filmed lectures, readings, and problem sets, many MOOCs provide interactive courses with user forums or social media discussions to ...

8. 4chan - Wikipedia

   en.wikipedia.org/wiki/4chan

   4chan Homepage on May 3, 2023 Type of site Imageboard Available in English Owner Hiroyuki Nishimura Created by Christopher Poole URL www.4chan.org Commercial Yes Registration None available (except for staff) Launched October 1, 2003 ; 20 years ago (2003-10-01) 4chan is an anonymous English-language imageboard website. Launched by Christopher "moot" Poole in October 2003, the site hosts boards ...

9. Great Recession - Wikipedia

   en.wikipedia.org/wiki/Great_Recession

   For example, real GDP fell $650 billion (4.3%) and did not recover its $15 trillion pre-recession level until Q3 2011. [94] Household net worth, which reflects the value of both stock markets and housing prices, fell $11.5 trillion (17.3%) and did not regain its pre-recession level of $66.4 trillion until Q3 2012. [95]