Reasoning: Scoring 50 Marks on Repeatable Question Types
Reasoning in the IBPS RRB Officer Scale-II (GBO) single online paper carries 40 questions and 50 marks - joint-highest weight in the paper, alongside Quantitative Aptitude. The section rewards accuracy on a narrow set of recycled question types, not deep logical theory.
What is actually asked
Puzzles and seating arrangements (floor, box, month/year, circular and linear) typically supply 15–20 questions. The remainder comes from syllogism, inequality, coding-decoding, blood relations, direction sense, order-ranking, alphanumeric series, input-output and data sufficiency.
Rules worth memorising
- 'All A are B' does not convert to 'All B are A'. 'Some A are B' converts symmetrically to 'Some B are A'.
- Two particular statements never produce a universal conclusion.
- In inequality chains, combine only same-direction signs; 'either-or' applies when two conclusions form a complementary pair over the same pair of variables (A ≥ B and A < B).
- In linear arrangements, people facing south have their left on your right - flip before you place anyone.
- Direction questions: the answer is the straight-line displacement, so use Pythagoras after drawing the path.
Worked example
Statements: All pens are books. Some books are red. Conclusion I: Some pens are red. Conclusion II: Some red are books. Only II follows. 'Some books are red' converts to 'Some red are books'. Conclusion I is merely a possibility, because the red books may sit outside the pen set - a possibility is not a certainty.
Traps that cost marks
Marking possibility cases as definite in syllogism; assuming gender in blood relations ('my cousin's father' may be your uncle or your own father); overlooking 'only a few' phrasing; and guessing. A wrong answer costs one-fourth of that question's 1.25 marks, so a blind guess on five puzzles wipes out a full correct answer.