Syncfusion Software Engineer interview questions

They conduct interview in batches.solve atleast 5 or 6 coding questions out of 6 to get placed.no questions in hr round.document verification only.you must have some problem solving skills to solve coding prblms and I am not allowed to use any inbuilt functions.

first round is aptitude 1 pipe,pseudo code, relationship question, round 2-6 question need explain and all the test case need to pass then only they allow to code next one question like format , calculation ,harshad number l was coded 4 but i got rejected