@Bikram sir, GO test is best among all available paid/free.
Tried many subject test- DS , algo, Programming, OS, TOC, Digital, maths..
About question set-
1. Some really good questions .. tricky + some needed edge case concept.
2. Question set covers almost whole syllabus related to GATE.
3. Some- prev year questions but it is necessary ..because sometimes we don't even able to solve prev. year questions and we seek for new questions..
1. Very nice set of questions.
3. The best explanation for every required questions
4. Doubt gets cleared within 12 hr.
Thank you so much sir :) for providing best free test series.