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  2. Дана арифметическая прогрессия:

Дана арифметическая прогрессия: -25; -22; -19; . найдите суммы всех отрицательных, первых одиннадцати положительных и первых двадцати членов данной прогрессии.
, с решением ​

Maika01 Maika01    1   23.12.2019 18:34    33

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