Tiger Analytics Interview Question

In First Round (Assessment Round): There was total 9 questions. 7 objective and 2 programs. objective question may be role specific. for me it was code snippets and ML, Data Science concepts. programming questions was moderate. 1. Program : Count of substrings of length K with exactly K distinct characters 2. Program: not remember exactly 2nd Round (1st Technical Round) Interviewer asking last project experience, putting cross question while explain the project and also asking scenario based questions. My projects was NLP based so asking stemming lemmatization W2V, Bert, Preprocessing and performance Evolution metrics, what and why used. asked to write 2 programs 1. how you will count how many times a object occurring in list without any library/built-in function. 2. print all sub list of length 4 where numbers of 0s and 1s are equal. given a binary list of length n. Interview also asked a probability question question: if sects are setting on every corner of tringle and they all can move in any direction, either clockwise or anti clockwise. if the start to run, what is the probability that they will never collide to each other. I answered all question. Interviewer was supportive and giving enough time to explain each topic. 3rd round (2nd Technical round) asked last project experience and asking some scenario based questions. he didn't asked to write any program but asked 4-5 probability and stats question. Interviewer was checking how I am interpreting the question. 1. Hand Shake Problem 2. if 3 prime numbers sum is 100 and 1 number is 36 greater than other than what are all 3 prime numbers. 3. probability that a point select from inside a circle will be near to its circumference than its center. 4. not remember Interviewer was very good and was giving enough time to explain each question. he was saying take your time and explain what logic you applied. both round was approx 1 hour long. 4th round (HR round): HR didn't asked anything. just told me about my selection and package/benefits details. I said Yes immediately.