Răspuns:
Explicație pas cu pas:
7 (0,7,14,21,28,35,42,49,56,63,70,77,84,91,98)
11(0,11,22,33,44,55,66,77,88,99,110,121,132)
5(25,30,35,40,45)
17(51,68,85,102,118,136,153,170,187)
13(13,26,39,52,65,78,91)
234(234,468,702,936)
