# A = {1, 2, 3, 4, 5, 6, 7, 8}

Question:

$A=\{1,2,3,4,5,6,7,8\}$ and if $R=\{(x, y): y$ is one half of $x, x, y \in A\}$ is a relation on $A$, then write $R$ as a set of ordered pairs.

Solution:

Since $R=\{(x, y): y$ is one half of $x ; x, y \in A\}$

So, $R=\{(2,1),(4,2),(6,3),(8,4)\}$