A certain unit has recruited 30 new employees this year. 1. Some of the newly recruited employees are from other regions; 2. Among the newly recruited employees, the one with the highest degree is not an outlander; 3. Some of the newly recruited employees are not from other regions.
The statement "30 employees are all outlanders" correctly represents the number of outlanders among the newly recruited employees of the unit if only one of the above three judgments is true.