Răspuns :
a) 2+3+5+6+2+3+2= 23 elevi
b)
[tex] \frac{2 \times 4 + 3 \times 5 + 5 \times 6 + 6 \times 7 +2 \times 8 + 3 \times 9 + 2 \times 10 }{23} \\ = \frac{8 + 15 + 30 + 42 + 16 + 27 + 20}{23} \\ = \frac{158}{23 } \\ = 6.86[/tex]
coroana?
b)
[tex] \frac{2 \times 4 + 3 \times 5 + 5 \times 6 + 6 \times 7 +2 \times 8 + 3 \times 9 + 2 \times 10 }{23} \\ = \frac{8 + 15 + 30 + 42 + 16 + 27 + 20}{23} \\ = \frac{158}{23 } \\ = 6.86[/tex]
coroana?