Hi Mauricio,
I don't know if my answer to 2.7 was correct, but here's what I submitted:
"increment .count by 1 more;"
I've asked Professor Xeriland when he'll let us know what the correct answers are, and am waiting for his response.
It would be great to know the correct answers before moving on to the next chapter, however I know that we are all working at a different pace so it may not be optimal to provide the correct answers to Chapter 2 before everyone has submitted their work.