Question

S=2+4+6...+106 cum se rezolvă

Answer 1

Aplicam suma lui Gauss
2+4+6+....+106
2*(1+2+3+.....+53):2
2*53*(53+1):2
2*53*54:2
2*53*27
106*27
2862

Answer 2

S = 2 + 4 + 6 + ....... + 106

S = 2 × ( 1 + 2 + 3 + ....... + 53 )

S = 2 × 53 × ( 1 + 53 ) : 2

S = 53 × 54

S = 2 862