Prove that a relation R defined on `NxxN` where `(a, b)R(c, d) <=> ad = bc` is an equivalence relation.

Prove that a relation R defined on N xx N where (a,b)R(c,d)hArr ad=bc is an equivalence relation.

If R is a relation in N xx N , show that the relation R defined by (a, b) R (c, d) if and only if ad = bc is an equivalence relation.

R is relation in N xxN as (a,b) R (c,d) hArr ad = bc . Show that R is an equivalence relation.

Show that the relation R defined by (a, b) R(c,d)implies a+d=b+c in the set N is an equivalence relation.

Let N be the set of all natural numbers and R be the relation in NxxN defined by (a,b) R (c,d), if ad=bc. Show that R is an equivalence relation.

Show that the relation R on the set N xx N defined by (a, b)R(c, d) iff a d(b+c)=b c(a+d) is an equivalence relation.

Let N be the set of all natural numbers. Let R be a relation on N xx N , defined by (a,b) R (c,c) rArr ad= bc, Show that R is an equivalence relation on N xx N .

Let A={1,2,3,......,} and the relation R defined as (a, b) R (c,d) if a+d=b+c be an equivalence relation. Then, the equivalence class containing [(2,5)] is: