Table: gdp_rankings
Columns: rank_subcontinent
rank_asia
rank_world
country
2011_gdp_ppp_billions_of_usd

Question: Name the least rank subcontinent for bangladesh
SQL: SELECT MIN("rank_subcontinent") FROM gdp_rankings WHERE "country" = 'Bangladesh'

Question: Name the rank world for 7 rank subcontinent
SQL: SELECT "rank_world" FROM gdp_rankings WHERE "rank_subcontinent" = 7

Question: Name the 2011 gdp for pakistan
SQL: SELECT "2011_gdp_ppp_billions_of_usd" FROM gdp_rankings WHERE "country" = 'Pakistan'

Question: Name the 2011 gdp for 65 rank world
SQL: SELECT "2011_gdp_ppp_billions_of_usd" FROM gdp_rankings WHERE "rank_world" = 65

Question: Name the number of rank world for bhutan
SQL: SELECT COUNT("rank_world") FROM gdp_rankings WHERE "country" = 'Bhutan'