Razorthink Software Developer interview questions

At first they told there will be only 3 rounds in the interview and then they dragged to 8 rounds. Only 4 candidates were shortlisted for the final CEO round out of 300 and none of them were selected

The interview started with Aptitude, followed by programming round, tough to crack aptitude, they kept asking about calculus which we learnt in our 12th standard. The programming round was tough since they asked to write multiple code and wanted all the correct answers to be written for all of them...