I am interested!

1. The pain in my knee is caused by running. Patellofemoral (knee) strain is the most common injury that runners sustain.

2. Any student in the class may get an A by completing each assignment on time. A student may also obtain an A by applying to the professor for extra credit assignments. Meg has an A and turned in 2 assignments after the due date, thus she must have received an extra credit assignment from her professor.

3. A baseball was found in the stands behind the outfield. Danny is on the field when the baseball is found. When Danny hits a home run on the field, the ball is generally found in the stands behind the outfield. Therefore, Danny must have hit a home run.