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  2. Luis von Ahn - Wikipedia

    en.wikipedia.org/wiki/Luis_von_Ahn

    Duolingo logo. In 2009, von Ahn and his graduate student Severin Hacker began to develop Duolingo, a language education platform. They founded a company of the same name, with von Ahn as chief executive officer and Hacker as chief technology officer. In November 2011, a private beta test of Duolingo was launched and the app was released to the ...

  3. Duolingo - Wikipedia

    en.wikipedia.org/wiki/Duolingo

    Duolingo Math is an app course for learning elementary mathematics. It was announced on YouTube on August 27, 2022, at the Duocon 2022 event. [70] Duolingo Math covers math topics through an interactive and gradual approach. It starts with basic arithmetic—addition, subtraction, multiplication, and division. The app also teaches fractions and ...

  4. Severin Hacker - Wikipedia

    en.wikipedia.org/wiki/Severin_Hacker

    He moved to Pittsburgh to study at Carnegie Mellon University where he co-founded Duolingo with Luis von Ahn in 2009. [ 6 ] He received his BS in Computer Science from ETH Zurich in 2006 and his Ph.D. in Computer Science from Carnegie Mellon University in 2014.

  5. Duolingo 'killed' off its mascot — and somehow captivated the ...

    www.aol.com/duolingo-killed-off-mascot-somehow...

    Duolingo’s Duo the Owl, an internet-famous big green bird, was killed by a Cybertruck in an apparent marketing stunt orchestrated by the language-learning app this week.

  6. Dua Lipa reacts to Duolingo owl's death: 'Til' death duo part'

    www.aol.com/dua-lipa-reacts-duolingo-owls...

    The Duolingo mobile app displays the "Dead Duo" logo on Feb. 11, 2025. Playing on their similar names, the company has built a storyline around the owl thirsting after Lipa.

  7. Duolingo releases its top 10 languages of 2023. What made the ...

    www.aol.com/news/duolingo-releases-top-10...

    Top 10 most popular languages learned on Duolingo. Although there were some changes this year, Duolingo listed the top 10 languages studied in 2023 as: 1. English. 2. Spanish. 3. French. 4. German ...

  8. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    Made in Japan, this was also the first calculator to use an LED display, the first hand-held calculator to use a single integrated circuit (then proclaimed as a "calculator on a chip"), the Mostek MK6010, and the first electronic calculator to run off replaceable batteries. Using four AA-size cells the LE-120A measures 4.9 by 2.8 by 0.9 inches ...

  9. Wikipedia:Age calculation templates - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Age_calculation...

    Wikipedia uses several templates that self-update every day to keep date and age information current. These are very useful for a dynamic online encyclopedia and save users from having to regularly update that kind of information. However, when using this kind of template, a few things should be kept in mind.