Difference of two sets

 Difference of two sets

1) Meaning of difference between two sets

Basically A-B means remove all elements from A that is also present in B 

and B-A means remove all elements from B that is also present in A

2) Different Formulas to write A-B and B-A

3) Diagrammatic proof of why A-B = A∩Bᶜ

The Red line region is B compliment and both Red line +  White line shaded region is A∩Bᶜ.

4) Number of elements in A-B and B-A & a short Question: