Let A = { 2,3,4} and B = { 8,9,12}. Then the number of elements in the relation R = { ( ( a_{1},b_{1} ), ( a_{2},b_{2} ) ) in (A X B,A X B):a_{1} divides b_{2} and a_{2} divides b_{1}} is: Relation (Mathematics) Question | DivineJEE

Let A = { 2,3,4} and B = { 8,9,12}. Then the number of elements in the relation R = { ( ( a_{1},b_{1} ), ( a_{2},b_{2} ) ) in (A X B,A X B):a_{1} divides b_{2} and a_{2} divides b_{1}} is: Relation (Mathematics) Question | DivineJEE | divineJEE