Jeu 1 :

Mes solutions :

906 = 75×(50/10+7)+3×2
906 = 7+(10+3)×(75−2)−50
906 = ((50−10)×(75−7)−2)/3
906 = 10+7×(75+50+3)
906 = 75×10+3×(50+2)