Question

 X and Y are two sets such that n(X)=33,n(Y)=42 and n(X∪Y)=70, then n(X∩Y) is: * 145 5 10 0​

Answer 1

Answer:

5

Step-by-step explanation:

n(X∪Y)=n(X)+n(Y)-n(X∩Y)

n(X∩Y)=n(X)+n(Y)-n(X∪Y)

n(X∩Y)=33+42-70

n(X∩Y)=75-70

n(X∩Y)=5