Mastercard SDE-intern interview questions

Interview was based on core concepts and dsa also puzzles were asked in the interview and lastly projects also asked. Interviewer was friendly the ly corrected me when i am going wrong

there were only three rounds. first round is online test where they asked me two basic coding questions.Second and third rounds: they were interview rounds. They lasted about 45 min each. They asked very easy questions and they were very helpful. I am glad that they helped me.