Question

Of 25 microcomputers available in a supply room, 10 have circuit boards for a printer, 5 have circuit boards for a modem, and 13 have neither type of board. Using P to denote those that have printer boards and M to denote those that have modem boards, symbolically denote the following sets, and give the number of microcomputers in each set. a Those that have both boards. b Those that have neither board. 4.2

Answer 1

Modem boavtd 5 n (M) =5 No- of cot cuit hane neither tute 06- boards. [By Demo"Zarns law] от n(POM)-13 n (PUM) -5-n(PUM) 铝25-13 ニ 12 -. In (PUM) -12

b) Those hawe neitheH boaud ǐ.entPN M) 3 bocud = 구+2