Lakshmi 3 is right.
5. Uma is the right answer for vA intha pakkam. Clue for the 2nd part: she debuted with the guy in Q.1.

Ramki,
1,2,4 and 7 are right. Ever since that movie YGM has specialized in playing himself: that of an 'arai kiRukku'

6 is Bhakta Dhruva MArkandeya.. a film full of only child artists and directed by Dr. Bhanumati Ramakrishna.
9. You are right about Raja Mariyathai. But the 2nd film of Karthik is ILanjOdigaL *ing Radha, Suresh and Vijay Shanti.

Ramki: 6
Lakshmi: 2.5