Răspuns :
un rand: 3+4=7 elevi
4x7=28 elevi /4 randuri
sau:
(4x3)+(4x4)=12+16=28 elevi
4x7=28 elevi /4 randuri
sau:
(4x3)+(4x4)=12+16=28 elevi
3×4=12
4×4 =16
12+16=28 elevi
2 mod:
3+3+3+3=12
4+4+4+4=16
16+12=28 elevi
4×4 =16
12+16=28 elevi
2 mod:
3+3+3+3=12
4+4+4+4=16
16+12=28 elevi