Question

Which of the following is a correct representation of inclusion exclusion principle (|A,B| represents intersection of sets A,B)?

|A U B|=|A|+|B|-|A,B|

|A,B|=|A|+|B|-|A U B|

|A U B|=|A|+|B|+|A,B|

|A,B|=|A|+|B|+|A U B​

Answer 1

Step-by-step explanation:

the answer will be

n(AUB)=n(A)+n(B)-n(AnB)