Cartesian product of sets and relation

Let Y= (1, 2, 3, 4, 5}, A = {1, 2). B = (3, 4, 5) If (A xx B) denotes Cartesian product of the set A and B, then number of elements in (Y xx A)nn (Y xx B) is ______

The Cartesian product A xxA has 9 elements among which are found (-1, 0) " and " (0, 1) . Find the set A and the remaining elements of A xxA .

The Cartesian product A xxA has 9 elements among which are found (-1," "0)" "a n d" "(0," "1) . Find the set A and the remaining elements of A xxA .

The Cartesian product A xxA has 9 elements among which are found (-1," "0)" "a n d" "(0," "1) . Find the set A and the remaining elements of A xxA .

Let A={2,\ 3,\ 4,\ 5,\ .......\ 17 ,\ 18} . Let ' ' be the equivalence relation on AxxA , cartesian product of A with itself, defined by (a ,\ b)(c ,\ d) iff a d=b c . Then, the number of ordered pairs of the equivalence class of (3, 2) is (a) 4 (b) 5 (c) 6 (d) 7

If R is the largest equivalence relation on a set A and S is any relation on A , then (a) RsubS (b) SsubR (c) R=S (d) none of these

If R is the set of all real numbers, what do the cartesian products R xxR and R xxR xxR represent?

If R is the set of all real numbers, what do the cartesian products R xxR and R xxR xxR represent?

Which one is related to the production of lymphocytes and antibodies ?

If R is a relation from a set A to a set B and S is a relation from B to a set C, then the relation SoR a) is from A to C b) is from C to A c) does not exist d) None of these