Railway Recruitment Board Placement Paper Company: Railway Recruitment Board Hajipur Railway Recruitment Board Hajipur (Group-D) Exam 2008 Previous Year RRB PapersDirection—In question 1 to 5, find the number/word in place of ‘?’1. 1, 3, 7, 15, ?(A) 16(B) 31(C) 46(D) 30Ans : (B) 2. 81, 27, 9, 3, ?(A) 3(B) 9(C) 1(D) 27Ans : (C) […]