7,17,27,37,47,57,67,87,97,107,117,127,137,147,157,167,187,197,207,307,407,507,607,707,717,727,737,747,757,767,787,797.
La nr: 207 adaugi in locul lui 0 cifrele de la 1 pana la 9 la fel si la 307 407 507 607 807 si 907 si 707
sper ca te am ajutat
SUCCES!