In ZIO you don’t need any mathematics or programming. Mathematics uptil class 8 or 9 are enough for ZIO. Neither do you need any idea of programming.
There are 2 ways which I do these ZIO problems:
- Think of a logic, and logically find out the answer.
- Do it manually (takes me an hour to solve one question)
So its better to think of a logic and find out the answer.
You should start with 2002, it has explanations along with the answers. The others is just about practice.
For the first question, I can give you in the form of hints:
The logic is related to Lowest Common Multiple.
Take any number of integers whose sum is n. Note, the number of integers can be greater than 2 too.
The answer will be L.C.M of the numbers. Thus, to maximize the answer, you maximize the L.C.M.