Ответ:111₁₀ = 64 + 32 + 8 + 4 + 2 + 1 = 1101111₂.186₁₀ = 2 · 8² + 7 · 8 + 2 = 272₈.509₁₀ = 1 · 16² + 15 · 16 + 13 = 1FD₁₆.124₁₀ = 64 + 32 + 16 + 8 + 4 = 1111100₂.75₁₀ = 1 · 8² + 1 · 8 + 3 = 113₈.651₁₀ = 2 · 16² + 8 · 16 + 11 = 28B₁₆.