Question 2
The diagram below shows four intersecting circles enclosing 8 regions. The numbers 1, 2, 3, 4, 5, 6, 7 and 8 are placed in each of the regions with each number being used exactly once. Each region should contain a number such that the sum of the three numbers within each of the four circles is the same. Solutions obtained by reflecting or rotating the diagram is considered the same. Find all possible solutions.
