Răspuns :
M7={0,7,14,21,28,35,...,7×n,...}
M10={0,10,20,30,40,50,...,10×n,...}
pentru 7:{0,7,14,21,28,35,42,49,56,63,70,...,n x 7,,,,,n=numar natural} 10:{0,10,20,30,40,50,60,70,80,90,100,...nx10,,,,n=numar natural} Sper ca v-am ajutat!!!!