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2 авг 2021 2.08.2021

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Максим Троицкий

1.08.2021

Duolingo: на чем зарабатывает сервис, весь контент которого доступен бесплатно

Несколько недель назад сервис, помогающий изучать иностранные языки, подал заявку на IPO в США. Давайте посмотрим, почему он так популярен, и на чем они вообще зарабатывают.

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