Question: What is the 2009 estimate population of the Northeast?
SQL: SELECT "Population (2009 estimate)" FROM "2-1268246-1" WHERE "Name" = 'Northeast';

Question: What is the 2009 estimate population of the region with Manaus as the largest city?
SQL: SELECT "Population (2009 estimate)" FROM "2-1268246-1" WHERE "Largest City" = 'Manaus';

Question: How many states has a 2009 estimate population of 27,3 million?
SQL: SELECT "Number of States" FROM "2-1268246-1" WHERE "Population (2009 estimate)" = '27,3 million';

Question: What is the largest metropolitan area of the Central-West?
SQL: SELECT "Largest Metropolitan Area" FROM "2-1268246-1" WHERE "Name" = 'Central-West';