1./__/
2./__/__/
3./__/__/__/
Al doilea nr are jumat din segm nr 1 +nr 3,adica( 1+3):2=2 segm
Suma lor e 3 984
Aflam nr segm
1+2+3=6 seg.egale
Cat e 1 segm sau 1 nr?
3984:6=664(1 nr)
Cat e nr 2?
664×2= 1328(nr 2)
Cat e nr 3?
664x3= 1992(nr 3)
V:664+1328+1992= =3984