Dau coroana +5stele

rezolvare
1.cati.....?
2+3+6+3+4+2+2+1=(rezolva tu)
2calculati........ .
3+4+5+6+7+8+9+10÷2=(rezolva tu)
Răspuns:
a)Elevi=2+3+6+3+4+2+2+2=23
b)Media=6+12+30+18+28+16+18+10/23
Media=138/23 = 6 !!!