Răspuns :
5,6,7,8,9,11,12,13,14 se rotunjesc la 10
15,16,17,18,19,21,22,23,24 se rotunjesc la 20
25,26,27,28,29,31,32,33,34 se rotunjesc la 30
15,16,17,18,19,21,22,23,24 se rotunjesc la 20
25,26,27,28,29,31,32,33,34 se rotunjesc la 30