Pergunta de entrevista da empresa payactiv

The interview questions depends on the interviewer but my interview as full stack developer covered 55% .NET and C#, 40% database and 5% Angular. I encountered these few questions. Find the second highest salary from a table of employeesSalary? Get the odd number of row from a table? How is a thread automatically assigned to new process when it has done one of it task while dealing with multi-threading?