Who was sitting to the right to Mrs. Green?
Discuss the steps which led you to your solution. Is your solution unique? Provide a convincing argument to support your conclusion.
The riddle gives us:
Mr. Green - Mrs. White - Mr. Black __________Mrs. Black - Mr. White _________
Mr. Green - Mrs. White - Mr. Black __________Mr. White - Mrs. Black _________
The blanks need to be filled with the three remaining people: Mr. Brown, Mrs. Brown, and Mrs. Green.
I just tried plugging them in and came up with this combination that works:
Mr. Green - Mrs. White - Mr. Black - Mrs. Green - Mr. Brown - Mrs. Black - Mr. White - Mrs. Brown
I'm not sure if that's the only way to solve it, but I don't immediately see any other ways it would work.