Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_96 (episode INTEGER, original_airdate VARCHAR, season VARCHAR)
### Question:
What is the average Episode Number, when Original Airdate is March 21, 2010, and when Season is less than 3?
### Answer:
SELECT AVG(episode) AS number FROM table_name_96 WHERE original_airdate = "march 21, 2010" AND season < 3