Question

10. IfX= { a, b, C, d } and Y= {f,b, d, g}, findi) Y -X(ii) XnY

Answer 1

Given X={ a,b,c,d } and Y={ f,b,d,g } .

(i)

X∩Y={ b,d }

X−Y=X−( X∩Y ) ={ a,b,c,d }−{ b,d } ={ a,c }

(ii)

The elements of X∩Y={ b,d }

Y−X=Y−( X∩Y ) ={ f,b,d,g }−{ b,d } ={ f,g }

(iii)

X∩Y={ a,b,c,d }∩{ f,b,d,g } ={ b,d }

Thus, X∩Y={ b,d } .