Răspuns:
3000 → 3 + 0 + 0 + 0 = 3
2001 → 2 + 0 + 0 + 1 = 3
2010 → 2 + 0 + 1 + 0 = 3
2100 → 2 + 1 + 0 + 0 = 3
1200 → 1 + 2 + 0 + 0 = 3
1020 → 1 + 0 + 2 + 0 = 3
1002 → 1 + 0 + 0 + 2 = 3
1110 → 1 + 1 + 1 + 0 = 3
1101 → 1 + 1 + 0 + 1 = 3
1011 → 1 + 0 + 1 + 1 = 3
Sunt 10 numere naturale de 4 cifre care au suma cifrelor egala cu 3.
