Question

Va rog frumos sa ma ajutati ! Tata ma va certa !Dau coronita

Answer 1

Primele 10 nr. nat. pare: 0,2,4,6,8,...,18 ---- Primele 10 nr. nat. nenule: 1,2,3,...,10. Deci aplicam "Suma lui Gauss", si avem: 0+2+4+...+18=18×19:2=342:2=171. ----- 1+2+3+...+10=10×11:2=110:2=55. ------- 171:55= 3,1(09). Sper ca te-am ajutat. :)

Answer 2

1. 0,2,4,6,8,10. ----- 1,2,3,4,5,6,7,8,9,10.------- 0+2+4+6+8+10+18=18×19:2=342:2=171. -- 1+2+3+4+5+6+7+8+9+10=10×11:2=110:2=55. -- 171:55= 3,1(09) Bafta!