The first round was a pen and paper test full of Logical reasoning, Syllogisms, Quantitative aptitude. It was pretty easy, but it has negative marking, and the there is a time constraint. The next round was the interview. The interview involved the usual questions you would find in any other interview(tell me about yourself, strengths, area of interest, project...). You will be asked to solve many more Apti questions. Don't worry if you don't get the answer, they just want to know about your thought process.