В) а1 = 15, d = 665. Стародавня арабська задача. Знайдіть 20-й член і суму двадцяти
членів арифметичної прогресії 3, 7, 11, 15, ...
паnайська задача. Знайдіть суму шістдесяти перших
BlackGolsi
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15.04.2021 14:27
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