how many maximum series number have 2apx05 prod. code.
CREATE TABLE table_21994729_3 (
    series__number INTEGER,
    prod_code VARCHAR
)
SELECT MAX(series__number) FROM table_21994729_3 WHERE prod_code = "2APX05"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: how many maximum series number have 2apx05 prod. code. ### Input: CREATE TABLE table_21994729_3 (
    series__number INTEGER,
    prod_code VARCHAR
) ### Response: SELECT MAX(series__number) FROM table_21994729_3 WHERE prod_code = "2APX05"