Question

2+4+6+...+330 suma lui Gauss​

Answer 1

Răspuns:

27390

Explicație pas cu pas:

2+4+6+...+330 dam factor comun pe 2

2×(1+2+3+....165)=

2×(165×166:2)=

27390

Answer 2

$\it 2+4+6+\ ...\ +330=2\cdot(1+2+3+\ ...\ +165)=2\cdot\dfrac{165\cdot166}{2}=165\cdot166=$