Задачки для тех, кто с математикой на «ты»
И вновь мы возвращаемся к задачкам по математике. Довольно полезно на 10 минут отвлечься от однообразной работы и попробовать перезапустить мозги. А что делает это лучше, как не пара-тройка не...

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