Welcome to SA Discussions. This post is dedicated to certain areas which are very important for RRB NTPC 2015 Exam. This is the new initiative where a MOD will conduct the discussion on all the topics that are asked in RRB NTPC exam. All the irrelevant disruptions and CHIT-CHAT will be blocked. In this post, we are going to discuss three sections: ARITHMETIC, GS/GA and REASONING.