Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_204_172 ( id number, "year" number, "representative" text, "hometown" text, "placement in miss nepal" text, "special awards at miss nepal" text, "placement in miss pokhara" text )

### Question ###
how many representatives placed at both miss nepal and miss pokhara .

### Accurate SQL ###

SELECT COUNT("representative") FROM table_204_172 WHERE NOT "placement in miss nepal" IS NULL AND NOT "placement in miss pokhara" IS NULL