16. For the following matrix describes a relation on the set X={1,2,3,4) with ordering of X:1,2,3,4. Write the set form of the relation. (1 0 1 0 0 0 0 0 1 0 1 0 lo 001) 17. How can we quickly determine whether a relation is R is antisymetric by examining the matrix of R relative to some ordering