$$\text { Show that the set of odd positive integers greater than } 3 \text { is countable. }$$

Question

Examlex · Accepted Answer

The Answer is The function

f ( n ) = 2 n + 3

is a one-to-one correspondence from the set of positive integers to the set of odd positive integers greater than 3 . Hence this set is countable.

$\text { Show that the set of odd positive integers greater than } 3 \text { is countable. }$