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  • 20-11-2022
  • Mathematics
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13.22. Задана арифметическая прогрессия (а ), у которой а, = -3
и d= 7. Является ли членом этой прогрессии число: 1) 247;
2) 346; 3) 2067? Если да, то укажите
е его номер.

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