Укажите последовательность чисел, соответствующую закономерности aₙ = 2n + 1.

  1. 3; 5; 7; 9; ...
  2. 5; 7; 9; 11; ...
  3. 1; 3; 5; 7; ...
  4. 2; 4; 6; 8; ...

📝 Detailed explanation

Подставим значения n = 1, 2, 3...: 2 × 1 + 1 = 3; 2 × 2 + 1 = 5; 2 × 3 + 1 = 7. Последовательность: 3; 5; 7; 9; ...
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