Determine the $x-$related page fault rate in the following three cases: $1)$ the main memory

uses $1-$KB paging with $4$ pages allocated for $x,2)$ the main memory uses $2-$KB paging with

$2$ pages allocated for $x,$ and $3)$ the main memory uses $4-KB$ paging with $1$ page allocated

for $x.$ Initially, no part of $x$ is in the main memory. Note: unsigned int $=4$ bytes.