CREATE TABLE table_1566848_6 (centerfold_model VARCHAR)

Name the 20 questions when centerfold model is cherie witter
SELECT 20 AS _questions FROM table_1566848_6 WHERE centerfold_model = "Cherie Witter"
SELECT 20 AS "_questions" FROM "table_1566848_6" WHERE "Cherie Witter" = "centerfold_model"