Training Problems Set 2 + Set 1 solution

It has already been a week since the Training Problems Set 1 was released. We would like to know how you feel about the problems (for example, the difficulty, style or wording etc), so please give us feedback by commenting below or emailing us (nzmosa@outlook.com)

The second set can be found here, and the solutions to the first set can be found here

The solutions to the second set will be released next week, but the release of the third set is undecided, as all of the members are, too, busy with the exams.

In a mean time, enjoy the problems!