How many different numbers of total dances are there for the couple ranked at number 6?
CREATE TABLE table_20424140_3 (number_of_dances VARCHAR, place VARCHAR)
SELECT COUNT(number_of_dances) FROM table_20424140_3 WHERE place = 6
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_20424140_3 (number_of_dances VARCHAR, place VARCHAR) Question: How many different numbers of total dances are there for the couple ranked at number 6? [/INST] SELECT COUNT(number_of_dances) FROM table_20424140_3 WHERE place = 6 </s>