Question

Write the given set in Roster form $A=\left\{Evennumbersdivisibleby5andlessthan20\right\}$

Answer 1

Roster method

In this method a set is represented by listing all the elements (without repetition), separating them by commas and enclosing them within curly brackets $\left\{\right\}$. Elements of set $A=\left\{10\right\}$.

Because $10$ is the only number which are even and divisible by $5$.

Hence, set in roster form is $A=\left\{10\right\}$