(1) belongs to (2) belongs to (3) does not belong to (4) belongs to (5) belongs to (6) belongs to.
2.
(1) belongs to (2) does not belong to (3) belongs to.
3.
( 1){2,3,4,5} (2){-2, 1} (3){0, 1,2}
4.
(1)y={x|x is greater than or equal to 0}
(2)y={x|x is greater than or equal to -4}
(3)y={x|x is not equal to 0}
(4){x|x is greater than or equal to 4/5}
5.
(1) does not belong to (2), belongs to (2) and is included.
Be included be included be included be included be included be included.
6.
(1)A is contained in C, and B is contained in C.
Example:
C: Class A: Students who can sing B: Students who can dance.
A∩B can sing and dance. Classmate Cu(A∪B): A classmate who can neither sing nor dance.
(2)A is contained in C and B is contained in C..
Example:
Same as above, but no one can sing and dance.