Question

Write the set $A=$ { $x:x$ is a natural number $\le 8$ } in roster form.

Answer 1

$A=$ { $x:x$ is a natural number $\le 8$ }.
So, the set contains the element $1,2,3,4,5,6,7,8$.
Hence in roster form $A=\{1,2,3,4,5,6,7,8\}$