Question

If n(A-B)= 18, n(A UB)= 70 and n(A n B) = 25 then find n(B).​

Answer 1

Answer:

ans is in pic

Step-by-step explanation:

helpful it is helpful

Answer 2

Answer:

n( B)=52

Step-by-step explanation:

given n(A-B)=18 , n(AUB) =70 ,n(AnB)=25

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

70=18+25+n(B-A)

70=43+n(B-A)

n(B-A) = 70-43

n(B-A) =27

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

n(B) = 25 +27

n(B) =52