1si2=1624
3si4=1624+1325
5si6=mai mult decat3si4
7si8=1+2+3+4+5+6=7si8
cat fier vechi au strans clasele3si4?
1624+1325=2949
cat fier vechi strange clasese 5si6
2949+1235=4184
cat a colectat clasele 7si8 ?
1624+2949+4184=8757
cat fier a colectat toata scoala ?
8757+ 1624+ 2949+ 4184=17514
cred ca e bine si scces la teme