1 CATI ELEVI PARTICIPA LA ATLETISM?
30:5=6
CATI ELEVI AU RAMAS?
30-6=24
2 CATI ELEVI PARTICIPA LA CONCURSUL CU ROLE?
24:4=6
CATI ELEVI AU RAMAS?
24-6=18
3 CATI ELEVI PARTIXCIPA LA SARITURI?
18:3=6
4 CATI COPII PARTICIPA LA CONCURS?
6+6+6=18
CATI ELEVI NU PARTICIPA LA CONCURS?
30-18=12