Consider the sets X and Y of Example 14. Find `X ∩ Y`.

Consider the sets A and B of Example 12. Find A ∩ B .

If the sets A and B are defined as : A={(x,y):y =1/x ,0 ne x in R} , B={(x,y) : y=-x , x in R}, then :

If X and Y are two sets and X^c denotes the complement of X, then X nn (X uu Y)^c is equal to :

Consider the following parallelograms.Find the values of the unknown x,y,z.

If X and Y are two sets such that X has 40 elements, X ∪ Y has 60 elements and X ∩ Y has 10 elements, how many elements does Y have?

If X and Y are two sets such that X has 40 elements , X uu Y has 60 elements and X nn Y has 10 elements , how many elements does Y have ?

Find the joint equation of lines y =x and y=-x.

If X and Y are two sets such that n ( X ) = 17, n ( Y ) = 23 and n ( X ∪ Y ) = 38 , find n ( X ∩ Y ) .

Prove that the relation R in the set of integers Z defined by R = {(x,y) : x - y. is an integer) is an equivalence relation.