`X, Y, and Z` are non-empty sets. All elementsof `X` are in `Y` and all elements of `X` are in `Z.` Which of the following does not follow from this information?

If X and Y are two non-empty sets, then what is (X - Y)' equal to

List all the elements of the following sets : A= {x : x^(2) lt 10, x in Z}

If A and B are non-empty sets, then AxxB is a non-empty set of ordered pairs (x,y) such that x inB and yinA .

If x/(y+z) = y/(z+x) = z/(x+y) then which one of the following is correct ?

List all the subsets of the following sets. C={x,y,z}

If A = {x,y,z} then the number of non-empty subsets of A is

If x+y +z=0 , then (x+y) (y+z) (z+x) is equal to which of the following:

If X,Y and Z are any three non empty sets such that any two of them are disjoint,then (x uu y uu z)(x nn y nn z) is

Let A be a non-empty set and '*' be a binary operation on P(A), the power set of A, defind by X*Y = X uu Y for all X, Y in P(A) Show that phi in P (A) is only invertible element w.r.t '*'