1 | ||
3-5
|
2 |
2 |
A.x∈M且y∈M | B.x∉M且y∈M | C.x∈M且y∉M | D.x∉M且y∉M |
1 | ||
3-5
|
3+5
| ||||
(3-5
|
3 |
41 |
5 |
41 |
2 |
2 |
2 |
A.
| B.{(a,b)}={(b,a)} | C.2∈{1,2} | D.∅=0 |
A.∅∉A | B.
| C.
| D.{
|
A.0∈A | B.a∉A | C.a∈A | D.a=A |
3 |
A.1 | B.2 | C.3 | D.4 |
2 |
1 | ||
3-5
|
2 |
A.x∈M,y∈M | B.x∈M,y∉M | C.x∉M,y∈M | D.x∉M,y∉M |
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