Let X be a non-empty set and let A, B, C be subsets of X. Consider the following statements:
1.A ⊆ C = (A ∩ B) ⊆ (C ∩ B)
2.(A ∩ B) ⊆ (C ∩ B) for all sets B ⇒ A ⊆ C
3.(A ∪ B) ⊆ (C ∪ B) for all sets B ⇒ A ⊆ C
Which of the above statements are correct?
Mathematics
2019
NDA Mathematics 2019
NDA 2019
Options
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