Question

Calculati suma numerelor naturale care impartite la 8 dau catul 13 .
VA ROG AJUTATI-MA !!!!!

Answer 1

a÷8=13rest d     d poate fi 0,1,2,3,4,5,6,7 a=13×8 +d   a=104 +d  Daca d=0 ,a=104,Daca d=1 a=105 Daca a=2 ,a=106 Daca d=3,a=107 DACA d =4,a=108 Daca d=5 ,a=109 Daca d=6 ,a=110 ,Daca d=7 ,a=111  Suma nr.104 +105+106+107+108+109+110+111=860