CREATE TABLE table_1566848_7 (pictorials VARCHAR2, centerfold_model VARCHAR2)

Who were all the pictorials when the centerfold model was Rebekka Armstrong?
SELECT COUNT(pictorials) FROM table_1566848_7 WHERE centerfold_model = "Rebekka Armstrong"
SELECT COUNT("pictorials") FROM "table_1566848_7" WHERE "Rebekka Armstrong" = "centerfold_model"