Context: CREATE TABLE table_16724844_1 (mens_u20 VARCHAR, womens_40 VARCHAR)
Question: How many times was the mens u20 recorded when the Womens 40 were Sydney Scorpions def North Queensland Cyclones?
Answer: SELECT COUNT(mens_u20) FROM table_16724844_1 WHERE womens_40 = "Sydney Scorpions def North Queensland Cyclones"