Question

Aflati suma multiplilor lui 15 care se afla intre numerele a)24 si 289 b)153 si 587

Answer 1

a)30,45,60,75,90,105,120,135,150,165,180,195,210,225,240,255,270,285<br />30+45+60+75+90+105+120+135+150+165+180+195+210+225+240+255+270+285=2835<br />b)165,180,195,210,225,240,255,270,285,300,315,330,345,360,375,390,405,420,435,450,465,480,495,510,525,540,555,570,585<br />165+180+195+210+225+240+255+270+285+300+315+330+345+360+375+390+405+420+435+450+465+480+495+510+525+540+555+570+585=10875