Question

media aritmetica a numerelor 81,72 si 102




media aritmetica a numerelor 234,510,133 si 11

Answer 1

(81+72+102):3
    255:3=85
(234+510+133+11):4=888:4=222
        

Answer 2

$\frac{81+72+102}{3} = \frac{255}{3} = 85$

$\frac{234+510+133+11}{4} = \frac{888}{4} = 222$