albe. |----|
rosii. |----|----|----|----| + 9
albastre |----|----|----|----|
albe+rosii+albastre= 81
81-9= 72 ( 9 segmente egale)
72:9= 8 ( margele albe)
8×4= 32 ( margele albastre)
8×4+9= 41 ( margele rosii)
verificare: 8+32+41= 81
Raspuns: 8 albe, 32 albastre, 41 rosii