Răspunsuri

2014-10-22T21:49:16+03:00
Cel mai inteligent răspuns!
  • Utilizator Brainly
2014-10-22T22:03:29+03:00
(1+2+3+...+56):56=[56x(56+1)]:56=(56x57):56=3192:56=57 rest 0 (zero)