Zynga interview questions

0. Introduce yourself and what are you doing at your current job? 1. Which mobile game do you play on your phone right now? 2. Which parts of game do you like the most or the least? Explain why. Also let me know how you will change it. 3. Some mobile KPIs in your game need to be further broken down to find out the root of causes. How will you do it and what are your steps?

Find the minimum number of races required to find out the winner between 25 horses, in one race you can race 5 horses.