A={2,3 , 4 , 5 . . . ,30} order pair (a,b)R(c,d) are equivalence if ad=cb then find number of elements equivalent to (4,3) is

Give three rational numbers equivalent to: (-3)/(4)

Find two equivalent ratios of 3 : 4.

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:

Let A = {1, 2, 3, 4, 5, …., 17, 18}. Let ' ~= ' be the equivalence relation on A xx A , cartesian product of A with itself, defined by (a,b) ~= (c, d) iff ad = bc. Then, the number of ordered pairs of the equivalence class of (3, 2) is

Let A = (1,2, 3, 4, 5, ..., 30) and ~= be an equivalence relation on AxxA , defined by (a,b) ~= (c,d) if and only if ad=bc. Then the number of ordered pairs which satisfy this equivalence relation with ordered pair (4,3) is equal to :

If A = {1,2,3,4,} then minimum number of ordered pair added to make it equivalence relation on set A containing (1,3) and (1,2) is

Prove that the relation R on the set N xx N defined by (a,b)R(c,d)a+d=b+c for all (a,b),(c,d)in N xx N is an equivalence relation.Also,find the equivalence classes [(2, 3)] and [(1,3)].

Let A={1,2,3,~ 9}~ and~ R be the relation on A xx A defined by (a,b)R(c,d) if a+d=b+c for all (a,b),(c,d)in A xx A Prove that R is an equivalence relation and also obtain the equivalence class [(2,5)]