Reasoning - Logical & Analytical Reasoning for Competitive Exams

Reasoning — Complete Study Material & Preparation Guide for Govt Exams

Reasoning (also called Logical Reasoning, General Intelligence or Mental Ability) is the only subject in the competitive exam universe that rewards pure thinking ability rather than memorisation. While General English and General Awareness demand recall, and Quantitative Aptitude demands speed with numbers, Reasoning tests how clearly you can think, how quickly you spot patterns, and how logically you connect statements. It is the one section that almost every government exam — SSC CGL and CHSL, RRB NTPC and Group D, IBPS PO and Clerk, SBI PO, RBI Grade B, UPSC CSAT, and a host of state-level exams — carries in some form, which makes it non-negotiable in any serious preparation plan.

There is a second reason the subject matters so much: it is the most scoreable section. With the right techniques and enough practice, most Reasoning questions can be solved faster than Quant questions, and accuracy is easier to control because answers are either right or wrong with no intermediate calculation. Because marks-per-minute for Reasoning are typically the highest of any section, exam toppers treat it as their scoring engine. Across exams, a candidate who is strong in Reasoning can bank roughly 8–12 percent of total marks purely from this section, and in exams like SBI Clerk or RBI Assistant the weightage climbs even higher relative to other sections.

This guide covers the complete syllabus — both Verbal (Analytical) and Non-Verbal (Visual) Reasoning — with weightage across major exams, a concrete strategy, standard reference books, and the mistakes that cost aspirants easy marks. Read it once for the overview, then use the topic lists as your practice checklist.

Importance & Weightage Across Exams

The weightage below reflects the typical structure of each exam as published in recent official notifications (SSC, IBPS, Railway and UPSC). Percentages are approximate and can shift slightly year to year, but the relative emphasis shown here has been stable.

Exam	Section Name	Approx. Questions	Marks / Weightage	Time Suggestion
SSC CGL (Tier-1)	General Intelligence & Reasoning	25	50 marks (25% of 200)	15–17 min
SSC CHSL	General Intelligence & Reasoning	25	50 marks (25% of 200)	15–17 min
SSC CPO / MTS	General Intelligence & Reasoning	20–25	~50 marks	15 min
IBPS PO / Clerk	Reasoning Ability	35 (PO) / 35 (Clerk)	35–45 marks; PO Prelims 35/100	20 min
SBI PO / Clerk	Reasoning Ability	45 (Clerk) / 35–45 (PO)	SBI Clerk 45/100, PO 35–45/100	20–30 min
RBI Grade B / Assistant	Reasoning	35–50	35–50 marks	20–25 min
RRB NTPC / Group D	General Intelligence & Reasoning	30 (NTPC) / 25–30	30 marks each	20 min
UPSC CSAT (Paper-II)	Logical Reasoning & Analytical Ability	~15–20 of 80	~20% of qualifying 200	Allocated within 2 hrs
State PSC / Police / Banking	Mental Ability / Logical Reasoning	15–40	Varies by state; usually 15–30%	Proportional

Key takeaway: in SSC exams Reasoning is one-fourth of the entire paper, while in Banking exams it is the largest single section in the prelims. For UPSC aspirants it is part of the qualifying CSAT paper, but a weak CSAT score eliminates thousands of candidates from the Mains, so it deserves serious attention.

Detailed Topic-wise Syllabus

Verbal Reasoning (Analytical / Mental Ability)

Analogy — word analogies, number analogies, letter analogies, and mixed analogies (finding the second relation from the first).
Classification / Odd One Out — choose the word, number, letter or figure that does not belong to the group based on a hidden rule.
Series — number series, letter series, mixed series and wrong-term series; spotting addition, multiplication, square, cube and alternating patterns.
Coding-Decoding — letter-shift codes, number codes, symbol codes, word codes, and special condition codes (frequent in SSC and RRB).
Blood Relations — direct family trees, coded relations, and the popular "pointing to a person" questions used in SSC and Banking.
Direction Sense / Direction & Distance — shadow-based directions, sun-moon direction questions, and distance along a path.
Syllogism — two- and three-statement syllogisms; possible/definite conclusions, "only", "some not" and possibility-based answers (heavily tested in Banking prelims).
Order & Ranking — position from left/right, total persons, overlapping conditions, and between-two positions questions.
Inequalities — coded inequalities (A > B ≥ C ...), direct inequalities, and the conclusions that follow (staple of IBPS/SBI prelims).
Alphanumeric Series — arrangements of letters, numbers and symbols with position, odd-even and vowel-consonant condition questions.
Sitting Arrangement — linear arrangements (single and double rows), circular and rectangular arrangements, and blood-relation-linked seating.
Puzzles — floor, box, scheduling, comparison, and jumbled group puzzles (the make-or-break area in Banking).
Machine Input-Output — number/letter rearrangement machines with steps.
Data Sufficiency — decide which statements are enough to answer a question.
Statement & Conclusion / Assumption / Argument — pick the assumption, strengthen or weaken the argument, or mark the conclusion.
Cause & Effect — decide whether two statements are cause and effect, and which caused which.
Course of Action — choose the practical administrative step to follow from a given situation.
Critical Reasoning — statement-assumption, inference, and conclusion-based questions (common in UPSC CSAT and RBI).
Letter & Number Arrangement / Word Formation — meaningful word formation and dictionary-order questions.

Non-Verbal Reasoning (Visual / Abstract)

Figure / Non-Verbal Series — completing the next figure in a series of 5 figures; rotation, shading, and movement rules.
Mirror Images — horizontal and vertical mirror images of letters, words, numbers and figures.
Water Images — upside-down reflection of the object in water (a separate rule-set from mirror images).
Paper Folding & Cutting — predicting the result after folds and cuts, or matching the unfolded result (very frequent in SSC).
Embedded Figures — locate the given figure hidden inside a larger figure.
Figure Matrix — complete the 3x3 matrix where rows and columns follow the same pattern rule.
Counting Figures — count the number of triangles, squares, rectangles, straight lines, and circles in a complex diagram.
Dice & Cube — dice faces, opposite faces from a cube net, cut-cube number of painted pieces, and open-dice logic.
Dots & Intersections — counting the number of dots, straight lines, and intersections in a figure (SSC specialty).
Completion of Figure / Figure Analogies — complete the incomplete pattern or find the figure pair that follows the same analogy.
Venn Diagram Representation — choose the correct Venn diagram for word sets like "teacher, father, brother".
Non-Verbal Odd One Out — detect the figure that breaks the rotation or rule pattern.

Important Topics & High-Frequency Areas

Not every topic deserves equal time. The list below separates high-frequency, must-master topics from moderate and low priority, so you can plan your effort in proportion to marks actually on offer.

Priority	Topics	Why
Very High	Puzzles, Sitting Arrangement, Syllogism, Inequalities, Coding-Decoding, Series, Analogy, Blood Relations	Asked in nearly every Banking and SSC paper; puzzle types alone often carry 8–12 marks in IBPS/SBI prelims.
High	Direction Sense, Order & Ranking, Mirror/Water Images, Embedded Figures, Figure Series, Counting Figures, Dice & Cube	Short, high-accuracy scoring questions; very common in SSC and RRB where time per question is low.
Moderate	Paper Folding & Cutting, Data Sufficiency, Machine Input-Output, Alphanumeric Series, Statement-Conclusion	Appears regularly but with fewer questions; still worth mastering because they are learnable.
Selective	Cause & Effect, Course of Action, Critical Reasoning, Venn Diagrams, Figure Matrix, Dots & Intersections	Ask-limited but appear in SSC CHSL/CPO and CSAT; do them after the high-priority list is strong.

Preparation Strategy

Reasoning rewards systematic practice with technique-building, not marathon practice of random questions. Follow this four-phase plan.

Learn the technique (Weeks 1–4). Start with Analogy, Series, Coding-Decoding, Classification, Blood Relations and Direction Sense. For each topic, read the concept and worked examples, then solve 20–30 questions. Keep a short written note of each topic's trick — for example, always draw a clean diagram for Blood Relations and Direction, and convert coded inequalities to simple form before checking conclusions.
Master puzzles and arrangements (Weeks 5–8). Puzzles and Sitting Arrangement are the skill differentiators in Banking exams. Practise 30–45 minutes daily, starting with linear, then circular, then rectangular, then complex combined puzzles (seating plus floor plus blood relation). Learn to build a clean master-table and always re-check "either-or" and negative statements.
Do non-verbal topics (Weeks 9–10). Mirror images, water images, embedded figures and counting figures need the least theory and most visual practice, and carry high accuracy. Remember: mirror images flip left-right, water images flip top-bottom.
Mock-based refinement (Weeks 11 onward). Practise Reasoning inside full mocks and sectional tests with the exam time budget (15–17 minutes for 25 SSC questions, 20 minutes for 35 IBPS questions). Review every wrong and guessed answer, maintain a mistake-log, and re-solve high-frequency topics in the last two weeks.

Time allocation advice: give Reasoning 1 to 1.5 hours daily if you are preparing for Banking or SSC; for CSAT or state exams, 45 minutes to 1 hour is usually enough alongside other subjects. The single biggest accelerator is the daily puzzle drill — never let a day pass without at least two arrangement or puzzle questions once you start phase 2.

Recommended Books & Free Resources

A Modern Approach to Verbal & Non-Verbal Reasoning — R.S. Aggarwal (S. Chand). The classic foundation book covering both verbal and non-verbal topics with thousands of practice questions. Start here for every topic.
How to Prepare for Logical Reasoning for CAT — Arun Sharma (McGraw Hill). Higher-difficulty practice, especially strong for puzzles, arrangements, syllogism and critical reasoning.
A New Approach to Reasoning — B.S. Sijwali & Indu Sijwali (Arihant). Good for SSC-style questions with shortcut approaches and previous-year coverage.
Previous-year papers of SSC CGL/CHSL, IBPS PO/Clerk and RRB NTPC — the most representative source of actual question style. Solve at least the last 5 years of your target exam.
Official websites: ssc.gov.in, ibps.in, sbi.co.in, indianrailways.gov.in, and upsc.gov.in (CSAT paper pattern).

Reading plan: use R.S. Aggarwal as your main book and solve it cover-to-cover for the high-frequency topics; use Arun Sharma only after you are comfortable with basics, targeting puzzle and arrangement chapters; and always supplement with previous-year questions, which matter more than any single book.

Common Mistakes to Avoid

Attacking puzzles without a structure. Trying to solve arrangements mentally instead of drawing a clear master-table is the biggest reason Banking aspirants lose puzzle marks. Always diagram, always write the given conditions, and use pencil-and-check for possibilities.
Confusing mirror and water images. Mirror image reverses left and right; water image reverses top and bottom. Practising them together without noting the difference produces consistent errors.
Skipping the question stems in syllogism and inequalities. In Banking exams the stem (e.g. "only a few", "some not", or "if only conclusion I follows") decides the answer. Reading only the statements is a classic trap.
Spending too long on one hard question. Reasoning sections are time-boxed. If a question takes more than 2–2.5 minutes in a mock, mark it and move on; return only if time allows. One stuck question can cost you 4–5 easy ones.
Ignoring non-verbal topics. Many students spend months on verbal topics and neglect mirror images, embedded figures and counting figures, which are among the fastest questions in SSC. Each carries a mark you are handing away.
Not practising with the actual time limit. Solving Reasoning untimed gives false confidence. From phase 3 onwards, always practise with the exam time budget so your speed and accuracy are tested together.
Assuming no negative marking strategy. In most govt exams (SSC, IBPS, RRB) there is a penalty for wrong answers, while UPSC CSAT has a third-of-a-mark penalty. Uneducated guessing without eliminating options is a marks leak; guess only after eliminating at least two options.
Overlooking direction-sense shadow rules. Shadow questions (in the morning the sun rises in the east) are frequently missed because candidates memorise a fixed formula instead of drawing the sun position each time.

Frequently Asked Questions

Q1. Is Reasoning the easiest section to score in SSC and Banking exams?
For most aspirants, yes — it is the most speed-and-technique dependent and least memory-dependent section. With 2–3 months of structured practice, average accuracy in Reasoning typically reaches 85–95 percent, which is higher than what most candidates achieve in Quant or English. It is why strong scorers consistently treat it as their scoring engine.

Q2. Which topics should I start with, and which should I avoid in the beginning?
Start with Analogy, Classification, Series, Coding-Decoding, Blood Relations and Direction Sense — they are short, learnable and high-frequency. Avoid machine input-output and complex combined puzzles until your basics are solid, because they consume time before you have built speed.

Q3. How many hours daily should I spend on Reasoning?
For SSC or Banking targets, plan 1–1.5 hours daily: roughly 45 minutes of topic practice and 30–45 minutes on puzzles/arrangements. For UPSC CSAT or state exams, 45 minutes to 1 hour is normally sufficient, since the Reasoning weightage there is lower and the paper is qualifying.

Q4. What is the difference between Verbal and Non-Verbal Reasoning?
Verbal (analytical) Reasoning works with words, numbers and statements — syllogism, coding-decoding, blood relations, puzzles, inequalities. Non-Verbal (visual/abstract) Reasoning works with figures and images — mirror and water images, embedded figures, figure series, counting figures, dice and cube. Both are tested in SSC; Banking exams focus almost entirely on the verbal side.

Q5. Are R.S. Aggarwal and Arun Sharma books enough, or do I need coaching material?
The two books together cover the entire syllabus with far more questions than any coaching handout. Most successful aspirants combine them with previous-year papers and free online sectional tests. Coaching material is optional, not necessary, once these books are worked through properly.

Q6. Why do I score well in topic practice but poorly in mocks?
Almost always because of time pressure and mixed question sets. Topic practice lets you use one technique repeatedly; a mock forces rapid topic-switching. Fix it by regularly doing 25-question Reasoning sets inside the exact time limit and by maintaining a mistake-log that you review every week.