Question

when n(A) and n(B) is given n(A intersection B) =?

when n(A) and n(B) is given , n(A union B)​

Answer 1

Answer:

Step-by-step explanation:

the basic formula required for this question is

n(A∪B)=n(A)+n(B)-n(A∩B)

                   OR

n(A∩B)=n(A)+n(B)-n(A∪B)

Although when

• A and B are mutually exclusive events then

        n(A∪B)=n(A)+n(B)

• A and B are independent events then

        n(A∩B)=n(A)×n(B)