Răspuns:
3/4 = Sofia
Explicație pas cu pas:
ma (2/3 ; 0,75 ; 0,8(3)) = ?
0,75 = 75/100⁽²⁵ = 3/4
0,8(3) = (83-8)/90 = 75/90⁽⁵ = 15/18⁽³ = 5/6
ma (2/3 ; 0,75 ; 0,8(3)) = ma(2/3 ; 3/4 ; 5/6) =
= (⁴⁾2/3+³⁾3/4+²⁾5/6)/3 = [(8+9+10)/12]/3 = 27/36⁽⁹ = 3/4 =>
Sofia a raspuns corect.
