Consider the following in respect of sets A and B:
1.A ⊆ B ∪ B = A
2.(A – B) ∪ (B – A) = A ∪ B
3.(A – B) ∩ (B – A) = ∅
4.A ⊆ B ⇒ A ∪ B = B
Which of the above are correct?
Mathematics
2017
NDA Mathematics 2017
NDA 2017
Options
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