Question

if n(AUB)=30,n(A-B)=15 and n(B-A)=10 find n(A union b) 1. 5 2. 25 3. 35 4. 55​

Answer 1

Answer:

Answer is 5

Step-by-step explanation:

using formula n(AUB)=n(A-B)+n(B-A)+n(A intersection B)

30=15+10+n(A intersection B)

30=25+n(A intersection B)

30-25 =n(A intersection B)

5=n(A intersection B). is your answer

Hope u like it ❤

Answer 2

Here is your answer