4. Calculaţi: a) 1 +2 +3 +4 = b) 5+03+73 = c) 1 +93 +113= d) 14+24 +34 +44​

4 Calculaţi A 1 2 3 4 B 50373 C 1 93 113 D 1424 34 44 class=