Question

Let $A$ be the set of all even whole numbers less than $10$. Write A in roster form.

Answer 1

Determine the even whole numbers:

Even whole numbers less than $10$ are $0,2,4,6$ and $8$.

In roster form, it can be written as:

$A=\left\{0,2,4,6,8\right\}$

Hence, the roster form of $A$ is $\left\{0,2,4,6,8\right\}$.