Давайте попробуем с вами решить одну задачку по расчету метрики Retention от наших друзей из GoPractice, заодно потренируем свой английский. Голосуем за правильный ответ:

On September 1, the app had 2000 new users. On September 2, 800 of those users launched the app. On September 3, 600 of the 2000 original new users from September 1 returned to the app. Note that 300 of these 600 users also used the app on September 2, while the other 300 didn’t. On September 4, 400 users launched the app. Note that 100 of these 400 users also used the app on September 2nd & September 3rd.