CREATE TABLE table_1566850_9 (centerfold_model VARCHAR2)

Who was asked 20 questions in the issue where the centerfold is Marliece Andrada?
SELECT 20 AS _questions FROM table_1566850_9 WHERE centerfold_model = "Marliece Andrada"
SELECT 20 AS "_questions" FROM "table_1566850_9" WHERE "Marliece Andrada" = "centerfold_model"