1. 1972 Summer Olympics   Melbourne   Munich   Mexico City   Athens   Hint Half-n-half Clue   2. 1928 Summer Olympics   London   Amsterdam   Helsinki   Moscow   Half-n-half Clue   3. 1948 Summer Olympics   Athens   Sydney   Berlin   London   Half-n-half Clue   4. 2000 Summer Olympics   Moscow   St. Louis   Los Angeles   Sydney   Half-n-half Clue   5. 1956 Summer Olympics   Beijing   St. Louis   Montreal   Melbourne   Half-n-half Clue   6. 1996 Summer Olympics   Antwerp   Berlin   Atlanta   Montreal   Half-n-half Clue   7. 2012 Summer Olympics   Antwerp   London   Amsterdam   Paris   Half-n-half Clue