Răspuns :
a) 2
Nr sunt: 11 si 20
b) 4
Nr sunt: 13, 22, 31 si 40
c) 6
Nr sunt: 15, 24, 33, 42, 51 si 60
d) 8
Nr sunt: 17, 26, 35, 44, 53, 62, 71 si 80
Nr sunt: 11 si 20
b) 4
Nr sunt: 13, 22, 31 si 40
c) 6
Nr sunt: 15, 24, 33, 42, 51 si 60
d) 8
Nr sunt: 17, 26, 35, 44, 53, 62, 71 si 80
a). 11, 20
b). 13, 40, 31
c). 15, 51, 60,24,42
d). 17, 71, 80, 62, 26, 53, 35