RRB Group D 2018 Question Paper (24-Oct-2018) (Shift 2); Download PDF
RRB Group D Question Paper for 24th October 2018 – Shift 2 is a useful resource for aspirants to understand the exam pattern, question types, and difficulty level. Practicing with previous year papers helps in better time management and accuracy. The selection process for RRB Group D includes a Computer-Based Test (CBT), followed by a Physical Efficiency Test (PET), and finally, Document Verification (DV) and Medical Examination. Candidates must clear all these stages to secure a position in the Indian Railways under Group D posts.
Q1.
The arithmetic mean of a set of numbers is 12. The mean of another set of numbers is 15. If the combined mean of both sets is 12.5, then what will be the ratio of the frequency of both the groups?