%of all the opportunities are found in the hidden job market. it takes inside information to hear about these jobs.

The answer is 80%.
If the employers are given free chooice, most of them prefer to find employees candidates through candidates due reasons such as:
- It saves times  and money from the searching process
- Connections usually guaranteed the capability of the candidates (especially if reccomended by a good senior employee) without proper testing 

11: a which it you