Răspuns :
[tex] \frac{81+72+102}{3} = \frac{255}{3} = 85[/tex]
[tex] \frac{234+510+133+11}{4} = \frac{888}{4} = 222[/tex]
[tex] \frac{234+510+133+11}{4} = \frac{888}{4} = 222[/tex]