Cate bile sunt?
1000-10=990
I--------------------I--I----------------I------------------I
r 8
I------------------I---------------I
g a+n
aI----------I---I
26
nI----------I
Cate bile rosii sunt?
990:3+8=330+8=338
Cate bile galbene,albe si negre sunt?
990-338=652
Cate bile galbene sunt?
652:2=326
aI----------I---I
26 =652-326=326
nI----------I
egalam:
326-26=300(2n)
Cate bile negre sunt?
300:2=150
Dar albe?
150+26=176