Răspuns :
a) I nr= 797
797,798,799
b) al II-lea nr=599
598,599,600
c) 747,748,749
sau
746,747,748
sau
745,746,747
797,798,799
b) al II-lea nr=599
598,599,600
c) 747,748,749
sau
746,747,748
sau
745,746,747