Question

ajutor va rog, rapiiid nu stiu​

Answer 1

3.
A reunit B = {1,2,3,5,6}
A intersectat B = {2,5}
A - B = {1,6}
B - A = {2}


4.
a)
A= {1,3,5,7}
B={2,4,5,7}
C={4,6,7,9}

b)
A reunit B = {1,2,3,4,5,7}
A reunit C = {1,3,4,5,6,7,9}
B reunit C = {2,4,5,6,7,9}
A-B = {1,3}
A-C= {1,3,5}
B-C= {2,5}
A reunit B reunit C = {2,4,5,6,7,9}
A intersectat B intersectat C = {7}
(A reunit C) - B = {1,3,6,9}