Mathematics · Set Theory
Let A and B be two non-empty subsets of set X such that A is not a subset of B, then:
- 1A and B are always disjoint
- 2A and the complement of B are always non-disjoint✓
- 3B is always a subset of A
- 4A is always a subset of the complement of B
Correct answer
A and the complement of B are always non-disjoint
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