Solution

156773

First name
BIll
School
MArshall Laing
Country
Age
10

For the first one, the answer is 13 because I added 4 to 9 and again and again and I got up to 25 and the next one was 29.For the second one I added 2 from 3 and got 5 and the next number is 8. For the last one, I got 8 because I kept adding 2 and then I got it right.