M) CHO A = {1; 2; 3; 4; 5; 6; 7; 10}B = {2; 4; 6; 7; 8; 10}C = {4; 5; 6; 7}A) TÌM A∩B, \ CB

Câu 1: (2 di?m) Cho A = {1; 2; 3; 4; 5; 6; 7; 10}

B = {2; 4; 6; 7; 8; 10}

C = {4; 5; 6; 7}

a) Tìm

A

∩

B

,

\ CB

^{. (1d)}

b) Ch?ng minh :

∩ ( BA ()\ AC ∩= \) CB

^{. (1d)}