Local Quiz

[langara]

Anyone help please, 3 left to do, driving me mad.
1. The T N of N in a N S S P is 405

2. O 28 C W B

3. (This is a seven letter word) Quit secretly

[lizhoare]

Is there a theme to this puzzle? I wondered if the first one could be the total number of nines in something or other, the answer being 405. There are 45 9s in 405. Im probably totally wrong but it was just a thought. Good luck x