मान लीजिये कि U = {1,2,3,4,5,6,7,8,9}, A = {1,2,3,4,}, B = {2,4,6,8} और C = {3,4,5,6} तो निम्नलिखित ज्ञात कीजिये
`(A cup C)'`

Answer

{7,8,9}