Номер 4 Очень срочно
B₁ = 6 b₂ = b₁ * q = 6 * (2/3) = 4 b₃ = b₂ * q = 4 * (2/3) = 8/3 b₄ = b₃ * q = (8/3) * (2/3) = 16/9