CLAT Logical Reasoning: Question Types with Worked Examples

CLAT Logical Reasoning is 22 to 26 questions of the 120 in the 2027 pattern, built on passages. The Consortium’s CLAT 2025 syllabus describes short passages of about 450 words, each followed by one or more questions. In recent years the emphasis has been on reading short arguments and judging them: finding assumptions, strengthening or weakening a claim, and spotting flaws. We could not verify an official list of question types for 2027, so treat the types below as practice categories. All examples here are original and written for this guide.

Type 1: Critical reasoning (arguments)

Always identify the conclusion first, then the evidence, then the gap between them.

Example 1 (weaken). A town library made membership free last year. Visits to the library doubled. The librarian says free membership caused the increase. Which of these, if true, most weakens the librarian’s claim?

1. (a) The only other reading room in the town closed in the same month and its readers moved to the library.
2. (b) The library also bought more books last year.
3. (c) Some members visit only once a year.
4. (d) The library is open six days a week.

Answer: (a). It offers another cause for the rise in visits. (b) might even strengthen the claim, (c) and (d) are irrelevant to why visits changed.

Example 2 (assumption). “Schools that begin at 9 am report fewer late arrivals than schools that begin at 8 am. So moving an 8 am school to 9 am will reduce its late arrivals.” What does the argument assume?

1. (a) All schools should start at 9 am.
2. (b) The 8 am school and 9 am schools are alike in other respects that affect lateness, such as distance and transport.
3. (c) Students prefer later start times.
4. (d) Late arrivals are the only problem schools face.

Answer: (b). The argument moves from a comparison of different schools to a prediction about one school, which only works if the schools are otherwise comparable. (a), (c) and (d) go beyond what the conclusion needs.

Type 2: Analogies

Name the relationship in a sentence first, then test each option against that sentence. These are less central to passage-based CLAT papers than argument questions, so use them as warm-up drills only.

Example 3. Seed : Tree :: Egg : ? (a) Nest (b) Bird (c) Feather (d) Flight

Answer: (b). A seed develops into a tree; an egg develops into a bird. (a) is a home, not an outcome.

Example 4. Section : Statute :: Chapter : ? (a) Book (b) Page (c) Author (d) Library

Answer: (a). A section is a part of a statute; a chapter is a part of a book. (b) is smaller than a chapter, which breaks the order of part to whole.

Type 3: Syllogism-style reasoning

Use only the statements. Draw circles if it helps, and use the usual convention that the named groups are not empty.

Example 5. Statements: All contracts are agreements. Some agreements are void. Conclusions: I. Some contracts are void. II. Some agreements are contracts.

Answer: only II follows. If all contracts are agreements, then at least some agreements are contracts, so II follows. The void agreements may lie outside the contracts altogether, so I does not follow.

Example 6. Statements: No minor is a voter. All voters are citizens. Conclusion: Some citizens are not minors.

Answer: follows. The voters are citizens and are not minors, so at least some citizens are not minors.

Type 4: Ordering and arrangement

Example 7. P is taller than Q. R is shorter than Q. S is taller than P. Who is the shortest?

Answer: R. The chain is S, P, Q, R from tallest to shortest. Write the chain on paper, do not hold it in your head.

Common traps

• Choosing an option because it is true in the real world, when the question asks what follows from the passage.
• Confusing “strengthen” with “weaken” because of a quick read of the stem.
• Over-reading: picking a conclusion that is stronger than the evidence allows (“all” for “some”).
• Skipping the conclusion and reading the options first.

A drill you can follow

1. Read three short arguments a day from editorials. Write the conclusion in one line.
2. Write one assumption and one weakener for each.
3. Time yourself at about one minute per question.
4. Log mistakes by cause. See how to analyse a CLAT mock test.

Pace this section with the plan in our time management guide. For full-length practice, Lexfolio’s CLAT 2027 mock pack lists logical reasoning arguments and arrangement sets among its contents.

How to read an argument quickly

1. Underline words like “therefore”, “so”, “thus”, “hence”. The conclusion usually follows or precedes them.
2. Find the evidence: the facts offered in support.
3. Ask what must be true for the evidence to support the conclusion. That is the assumption.
4. Now each option is easy to judge: does it add support, remove support, or do nothing?

Another weaken and strengthen pair

Example 8. A city says its new bus lane cut average travel time because commuters now reach work faster. Which would most strengthen the claim? (a) The bus lane is painted red. (b) Travel-time surveys taken before and after on the same routes, at the same hours, show a drop. (c) More people own cars. (d) The city has many buses.

Answer: (b). A like-for-like before-and-after comparison supports the causal claim. The other options do not bear on the effect of the lane.

Why explanations matter more than answers

With every example above, the learning is in why the wrong options fail. When you practise, write a one-line reason against each rejected option. If you can do that for all four options, you have understood the question. If you can only justify the answer you picked, you may have got it right by luck.

Common wrong-option patterns

• Too extreme: uses words like “always”, “never” or “only” where the passage is cautious.
• Out of scope: true or interesting, but not about what the argument claims.
• Reversal: says the opposite of what the question asks, such as weakening when you were asked to strengthen.
• Restatement: repeats the evidence and adds nothing about the gap.