Răspuns:
5!×2-4!×3 = 3!××5+4!×2=> 2*5!-3*4!=5*3!+2*4!=> 2*5*4!-3*4!=5*3!+2*4*3!=>10*4!-3*4!=5*3!+8*3!=> 7*4!=13*3!=> 7*24=13*6=>168=78=> Fals