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Interview questions asked at Duolingo All 5
Coding questions reported from Duolingo interviews, most asked first. Each one has a solution on FleetCode.
Practise Duolingo questionsAbout Duolingo
Duolingo is a leading education technology company best known for its popular language-learning platform that uses gamification to make learning accessible and engaging. Founded in 2011 by Luis von Ahn and Severin Hacker, the company is headquartered in Pittsburgh, Pennsylvania. Duolingo’s core product is its mobile and web app, which offers courses in dozens of languages and is used by hundreds of millions of learners worldwide. The company’s mission is to develop the best education in the world and make it universally available.
Beyond language learning, Duolingo has expanded into additional educational offerings such as the Duolingo English Test, a widely accepted online English proficiency exam used by universities globally, as well as courses in math and music. The company is known for its data-driven product design, AI-powered personalization, and distinctive brand identity centered around its green owl mascot, Duo. Publicly listed on the NASDAQ under the ticker DUOL, Duolingo has earned a strong reputation in the global EdTech market for combining effective learning methods with highly engaging user experiences.