Nearbuy Software Development interview questions

In online round there were 27 questions and we have got 1;30 hr. 25 questions were related to aptitude, reasoning, probability and two were coding questions, one is related to Pascal Triangle and other was related to array but i don't remember it exactly right now. In second Round, it was concentred completely on checking your problem solving skills and he asked two coding question and one puzzle. 1-> find an element from row and column wise sorted 2d array in O(n) time complexity. 2->print zigzag order traversal of BST. 3->Minimum no of match required to find out out second best team among n-teams. Third round was concentrated on my resume. she asked about my projects and stuff mentioned in my CV. and at last she asked weighing problem puzzle. Last round was HR round so she started with introduction and then asked about my Interview Experience and also shared my feedback of all round and finally offered me to join their organisation as an intern.