Дискретная математика//Тусур. Контрольная работа 1
X={5,6,7,8}. В(Х)={∅,{8},{7},{7,8},{6,8},{6},{6,7},{6,7,8},{5},{5,8},{5,7},{5,7,8},{5,6},{5,6,8},{5,6,7},{5,6,7,8}} В(Х)={∅,{8},{7},{7,8},{6,8},{6},{6,7},{7,8},{5},{5,8},{5,7},{5,7,8},{5,6},{5,6,8},{5,6