Question

For two sets P and Q and null set ∅. which of the following statements is NOT correct?
1) P ∪ (P ∩ Q) = P
2) P ∪ ∅ = P
3) P - ∅ = P
4) P ∩ ∅ = P

Answer 1

I think option 3 hujii

Answer 2

Answer:

4, p n null set = p is not correct

Step-by-step explanation:

null set does not has any element but p will have any element so intersection (common )of both set  may only give null set