Răspuns :
3iin 9 merge de 3 ori 9:3=3
3 in 12 merge de 4 ori 12:3=4
3 in 30 merge de 10 ori 30:3=10
3 in 33 merge de 11ori 33:3=11
3 in 12 merge de 4 ori 12:3=4
3 in 30 merge de 10 ori 30:3=10
3 in 33 merge de 11ori 33:3=11