Question

Cartesian set of two countable set is​

Answer 1

Step-by-step explanation:

A Cartesian product of two countable sets is countable. (Cartesian product of two sets A and B consists of pairs (a, b) where a ∈ A (a is element of A) and b ∈ B.) The set Q of all rational numbers is equivalent to the set N of all integer

Answer 2

Step-by-step explanation:

A Cartesian product of two countable sets is countable. (Cartesian product of two sets A and B consists of pairs (a, b) where a ∈ A (a is element of A) and b ∈ B.) The set Q of all rational numbers is equivalent to the set N of all integers.