Вычислите: (2,1 × 10⁻¹¹) / (7 × 10⁻¹³)

  1. 3 × 10⁻¹
  2. 3
  3. 30
  4. 3 × 10²

📝 Detailed explanation

Вычисляем числовую часть и степени отдельно: 2,1 / 7 = 0,3. При делении степеней показатели вычитаются: 10⁻¹¹ / 10⁻¹³ = 10⁻¹¹⁺¹³ = 10². В итоге получаем: 0,3 × 10² = 30.
2 / 10 (20%)
Question 2 of 10
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