👤

Suma Gauss. 13×12+11×10+9×8+...........+3×2+1×0. Da.ti.mi rezolvarea toata a acestuia exercituil

Răspuns :

faci 13ori12plus11ori10plus9ori8plus7ori6plus5ori4plus3ori2plus1ori0 care vine 156plus110plus72plus42plus20plus6plus0 care vine 406