completeza fiecare sir cu inca trei numere potrivite

a\ 760, 770,780
b\ 914,814,714
c\253,303,353
d\ 999,888,777


Răspuns :

a) 790, 800, 810
b) 614, 514, 414
c) 666, 555, 444
a). 790,800,810
b)..614,514,414
c).403,453,503
d).666,555,444