Question

已知集合A=[0,5),B=(9,10],求A∩B,A∪B

Answer 1

已知集合A=[0,5),B=(9,10],

A∩B=空集,A∪B=[0,5)U(9,10],

设集合A=｛a,b,c,d,e},集合B={c,d,f,g},C={a,b,c,h,j},

A∩B={c,d},A∪B=｛a,b,c,d,e,f,g},

BC,

A∩(B∪C)

B∪C={a,b,c,d,f,g,h,j}

A∩(B∪C)={a,b,c,d}