SK hynix memory solutions interview questions

I applied via naukri. 1st telephonic round : they talking about candidates backround, education,relocate. 1st round:aptitude test(permutation,quantitative analysis,quadratic eqn,probability and statistics ) 2nd round:programing language(python basics builtin function, theoritical and practical knowledge) 3rd round:managerial and hr round

applied through contact from an employee's refer, nice interviewers. need some experience. soon got offer. a bit low than expected. down side is there are no stocks. benefits are good. insureance etc