Answer
A∪B = {1,2,3,5,7}
Work Step by Step
U = {1,2,3,4,5,6,7}
A = { 1,3,5,7}
B = {1,2,3}
C = {2,3,4,5,6}
A∪B shows all the elements of set A and set B and excluding repeated ones.
The elements of A∪B are 1,2,3,5,7.
Therefore A∪B = {1,2,3,5,7}
