Question

if X and Y are two such that X unian Y has 50 elements, X has 28 elements and Y has 32 element. how many elements does X intersection Y have?​

Answer 1

Answer:

X=28

Y=32

X U Y=50

X n Y=?

formula:

X U Y= X + Y - (X n Y)

50=28+32-(X n Y)

(X n Y)=10