If `A = {1,2,3,4,5,6,7,8,9,10}` and set T is defined as `T = {x,y}` , where `y in A` and `x+y = 10` or `xy = 10`, then, how many sets of the form T can be possible ? Write them ?

If x={0,1,2,3,4,5,6,7,8,9,10} and Y={ 2,4,6,8,10} then find X-Y.

If x={0,1,2,3,4,5,6,7,8,9,10} and Y={ 1,3,5,7,9} then X-Y=___.

Let A = {1,2,3,4,5,6,7,8} and R be the relation on A defined by : R = {(x,y) : x in A , y in A and x + 2y = 10 }. Find the domains and ranges of R and R^(-1) after expressing them as sets of ordered pairs.

Let A = {1, 2, 3, 4, 5, 6, 7, 8} and R be the relation on A defined by : R= {(x,y): x in A, y in A and x + 2y = 10} Find the domains and ranges of R and R^(-1) after expressing them as sets of ordered pairs.

Let x in {2, 3, 4} and y in {4, 6, 9, 10}. Let A be the set of all order pairs (x, y) such that x is a factor of y. How many elements does the set A contain ?

The relation R defined on the set A = { 1, 2, 3, 4} by : R= {( x,y) : |x^(2)-y^(2)| le 10, x,y in A} is given by :