Question

Calculati media aritmetica a numerelor de doua cifre,multipli ai lui 40.
Va rog, ajutati-ma!

Answer 1

M40=*{40;80}
ma=a+b/ =40 +80 supra 2= 120/2= 60 
ma=60

Answer 2

M₄₀= {0,40,80,120 ...}
M₄₀ de 2 cifre ( sau 9< M₄₀ <100) = 40,80.
M.a. {40,80} = $\frac{40+80}{2}$ = $\frac{120}{2}$ = 60.