rapid e pt test !!!!!!

21:2=10rest1, 10:2=5rest0, 5:2=2rest1, 2:2=1rest0, 1:2=0rest1, deci
numarul 21 in baza 10=10101 in baza 2
Răspuns:
21₍₁₀₎ = 10101₍₂₎
Explicație pas cu pas:
21₍₁₀₎ = ?₍₂₎
21:2 = 10 rest 1
10:2 = 5 rest 0
5 : 2 = 2 rest 1
2:2 = 1 rest 0
1:2 = 0 rest 1
21₍₁₀₎ = 10101₍₂₎