Question

Write the given set in roster form $A=\left\{\text{Integers less than12}\right\}$

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 $A=\{.....-1,0,1,2,3.........,11\}$.

Hence roster builder form is $A=\{.....-1,0,1,2,3.........,11\}$.