If `r and s` are two relation then r intersection s can be represented as

If R and S are two symmetric realations then

n g of substance X reacts with m g of substance Y to from p g of substance R and q g of substance S. This reaction can be represented as, X+Y=R+S . The relation which can be established in the amounts of the reactants and the products will be

If R and S are two equivalence relations on a set A then R nn S is also an equivalence relation on R.

If R and S are relations on a set A, then prove the following: R and S are symmetric $R nn S and R uu S are symmetric R is reflexive and S is any relation hat varphi R uu S is reflexive.

If R and S are relations on a set A, then prove the following: R and S are symmetric rArr R nn S and R uu S are symmetric (ii) R is reflexive and S is any relation rArr R uu S is reflexive.