Question

Answer the following from the adjoining venn diagram$.$

Write the universal set $U$ by the roster method$.$

Answer 1

In the above diagram, universal set $U$ have all the elements of set $A$$,$set $B$ and the elements which are not in set $A$ and $B$

All the members of universal set are $-3,-2,-1,0,1,2,3$

Universal set in roster form can be written as below

$U=\left\{-3,-2,-1,0,1,2,3\right\}$

Hence$,$ the universal set is $U=\left\{-3,-2,-1,0,1,2,3\right\}$