Cogent Data Solutions interview questions

written 1 aptitude 2 written on technical questions interview they asked question on basics of angular js ,correction of code,output questions of angular basic aptitude questions on profit and loss ,boats and stream,time distance and work, speed,simple intrest and compound intrests

I had attended interview in this company in month of Oct 2017. 3 rounds are there. Written, 1st Interview, 2nd Interview. After 4 day, I recieved a call from them "you are selected for Java Intern position and join from tomorrow". I completely declined it because they was offering 0 rs salary for 6 month period, because I am a fresher. They are hiring freshers without giving salaries. employees works for 6 month without salaries. After that 2 years bond is there.