Question

34+41+48+.....+776 repede va rog

Answer 1

Răspuns: $\mathrm{\boxed{S =43~335}}$

Explicație pas cu pas:

$\mathrm{S = 34+41+48+.....+776}$

$\mathrm{Numarul ~termenilor ~din~ suma = (776-34):7+1}$

$\mathrm{Numarul ~termenilor ~din~ suma = 742:7+1}$

$\mathrm{Numarul ~termenilor ~din~ suma = 106+1}$

$\mathrm{\boxed{Numarul ~termenilor ~din~ suma = 107}}$

$\mathrm{S =(34+776)\cdot107:2}$

$\mathrm{S =810\cdot107:2}$

$\mathrm{S =405\cdot107}$

$\mathrm{\boxed{S =43~335}}$