NDA 2017 — Mathematics PYQ
NDA | Mathematics | 2017Consider the following in respect of sets A and B:
(1) (A - B) ∪ B = A
(2) ( A - B) ∪ A = A
(3) (A - B) ∩ B = φ
(4) A ⊆ B ⇒ A ∪ B = B
Which of the above are correct ?
Preparing for Excellence...
Consider the following in respect of sets A and B:
(1) (A - B) ∪ B = A
(2) ( A - B) ∪ A = A
(3) (A - B) ∩ B = φ
(4) A ⊆ B ⇒ A ∪ B = B
Which of the above are correct ?