Question

If A–B = A then A∩B = ?
(1) A
(2) B
(3) Φ
(4) A∪B

plzz tell the ans...​

Answer 1

Answer:

option 3

Step-by-step explanation:

A-B=A is possible only if B is {}

:. A intersection B is also null

Answer 2

Answer:

option 3

Step-by-step explanation:

a-b=a means no element of b belongs to a

∴a∩b = ∅