CREATE TABLE table_name_80 (number_of_electorates__2003_ INT, reserved_for___sc___st__none_ VARCHAR, constituency_number VARCHAR)

What is the average number of electorates (2003) reserved for sc with a constituency number of 50?
SELECT AVG(number_of_electorates__2003_) FROM table_name_80 WHERE reserved_for___sc___st__none_ = "sc" AND constituency_number = "50"
SELECT AVG("number_of_electorates__2003_") FROM "table_name_80" WHERE "50" = "constituency_number" AND "reserved_for___sc___st__none_" = "sc"