CREATE TABLE table_20254 ("Date" CLOB, "Cover model" CLOB, "Centerfold model" CLOB, "Interview subject" CLOB, "20 Questions" CLOB, "Pictorials" CLOB)

HOW MANY TIMES WAS LUDACRIS THE INTERVIEW SUBJECT FOR THE 20 QUESTIONS COLUMN?
SELECT COUNT("20 Questions") FROM table_20254 WHERE "Interview subject" = 'Ludacris'
SELECT COUNT("20 Questions") FROM "table_20254" WHERE "Interview subject" = 'Ludacris'