A club has 2780 members belonging to various professions, whose details are shown in the following table :
| Profession | Number of members | Ratio between males and females |
| Doctors | 750 | 3 : 2 |
| Engineers | 990 | 4 : 1 |
| Lawyers | 270 | 5 : 4 |
| Professors | 770 | 4 : 3 |
What is the difference between the number of male and female members ?
1
880
2
888
3
882
4
884