Răspuns:
a)
11011₍₂₎ = x₍₁₀₎
11011₍₂₎ = 1 × 2⁴ + 1 × 2³ + 0 × 2² + 1 × 2¹ + 1 × 2⁰
= 1 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1
= 16 + 8 + 0 + 2 + 1
= 27₍₁₀₎
11011₍₂₎ = 27₍₁₀₎
b)
101011₍₂₎ = x₍₁₀₎
101011₍₂₎ = 1×2⁰ + 1×2¹ + 0×2² + 1×2³ + 0×2⁴ + 1×2⁵
= 1×1 + 1×2 + 0×4 + 1×8 + 0×16 + 1×32
= 1 + 2 + 0 + 8 + 0 + 32
= 1 + 2 + 8 + 32
= 43₍₁₀₎
101011₍₂₎ = 43₍₁₀₎