CREATE TABLE table_name_11 (constituency_number VARCHAR(255), reserved_for___sc___st__none_ VARCHAR(255), name VARCHAR(255))
What is the Constituency number for Bikhangaon with a Reserved for ( SC / ST /None) of st?
    
SQL: SELECT constituency_number FROM table_name_11 WHERE reserved_for___sc___st__none_ = "st" AND name = "bikhangaon"