Well you got No. 1 and 2 right. Here are the answers to the rest.
3. The answer is 7/2
You missed the correct answer by 1. Since there are 2 halves in each circle, and there are 3 full circles, then 3 times 2 = 6, so in total there are 6 halves. Then there is 1 half left over, so 6 + 1 = 7. So it's 7/2.
