Ответ:

  1. 1011₂ = 1·2³ + 0·2² + 1·2¹ + 1·2⁰ = 8 + 2 + 1 = 11₁₀.
  2. 1000101₂ = 1·2⁶ + 1·2² + 1·2⁰ = 64 + 4 + 1 = 69₁₀.
  3. 1001010₂ = 1·2⁶ + 1·2³ + 1·2¹ = 64 + 8 + 2 = 74₁₀.