Răspuns :
|-----| albe
|-----|-----|-----| mov
72:4=18 panselute albe
18x3=54 panselute mov
54+18=72
|-----|-----|-----| mov
72:4=18 panselute albe
18x3=54 panselute mov
54+18=72
panselute albe |-------|-------|-------|
panselute mov |-------| } 72
72:4= 18 panselute mov
18 ×3= 54 panselute albe
Verificare : 54 + 18= 72.
panselute mov |-------| } 72
72:4= 18 panselute mov
18 ×3= 54 panselute albe
Verificare : 54 + 18= 72.