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_17625749_3 (points VARCHAR, losing_bonus VARCHAR, points_for VARCHAR)
### Question:
How many points categories are there when the losing bonus is 2 and points for are 642?
### Answer:
SELECT COUNT(points) FROM table_17625749_3 WHERE losing_bonus = "2" AND points_for = "642"