Can You Actually See All The Hidden Numbers?

In every circle, there is a hidden number or figure. Your job is to figure it out!

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:

A

N

S

W

E

R

1. 3
2. 6
3. 63
4. 2945
5. 74
6. 15
7. 29
8. 57
9. 42