Syllogism is the one reasoning topic where your general knowledge is a liability. The instruction at the top of every such question tells you to treat the given statements as true even if they contradict commonly known facts, and the moment you think 'but no dog is actually a flower', you have started solving a different question from the one asked. SSC's syllogisms are usually shorter and cleaner than the banking versions aspirants panic about, but they still reward one thing above all: drawing the Venn diagram instead of reasoning it out in your head, and then checking whether a conclusion must follow rather than whether it could. This page collects real previous-year SSC syllogism questions with the commission's own answer keys, organised so you can practise the decision rule rather than the individual puzzle.
Syllogism is part of the General Intelligence & Reasoning section in CGL Tier-1 - 25 questions for 50 marks, a 15-minute sectional lock, +2 for a correct answer and -0.50 for a wrong one. SSC's official syllabus names syllogistic reasoning and statement-conclusion, and the closely related Venn diagram questions sit under the same head, which is why the two are best prepared together. The topic recurs across shifts but not in a fixed quantity, so build the method rather than budgeting for a set number of marks. In Tier-2, the Reasoning & General Intelligence module of 30 questions and 90 marks carries the same logic with occasionally three or four statements instead of two.
Almost every syllogism error in SSC papers is the same error - accepting a conclusion that is merely possible. A conclusion follows only if it holds in every legal diagram you can draw from the statements, so the working method is to draw the arrangement that would break the conclusion, and accept it only when you cannot. Our solutions are written as that search, not as a single diagram presented as fact, so you learn the test rather than the answer.
'All A are B, some B are C' is unreadable as prose and obvious as two overlapping circles. Every syllogism explanation in the bank shows the circles, including the alternative arrangement when more than one is legal - which is exactly the case where the intuitive answer goes wrong. Because roughly 29,000 of our approximately 31,000 questions are genuine previous-year SSC questions carrying SSC's official answer keys, the diagrams are reconciled with the commission's own key rather than with a textbook convention.
SSC uses the complementary-pair case less heavily than bank exams do, but it does use it, and it is the single trap that turns a confident attempt into -0.50. We keep those questions in their own set so you can meet the pattern deliberately: when two conclusions are contradictory and neither individually follows, either-or may still hold. Practising it in isolation for twenty minutes is worth more than meeting it once by accident in a mock.
Syllogism is fast once the method is automatic and ruinous while it is not, because there is always one more arrangement to check. Our free full-length mocks reproduce the Tier-1 format exactly - 100 questions, four sections of 25, 15 minutes each, +2 and -0.50 - so you find out under the clock whether your method has become reflex. The AI then flags whether your syllogism losses were conceptual or purely time-pressure, and builds a 7-day plan around the one that is real.
Translate each statement into circles: 'All A are B' puts circle A entirely inside B, 'No A is B' keeps the circles apart, 'Some A are B' overlaps them, and 'Some A are not B' means at least part of A lies outside B. Then test each conclusion by trying to draw a legal arrangement in which it is false - if you can, it does not follow. If no such arrangement exists, it follows. Doing this on paper takes under thirty seconds and removes almost all the guesswork.
No, and this is the instruction printed on the question itself - take the statements as true even where they conflict with commonly known facts. If a question says all pens are elephants, then inside that question they are, and your knowledge of elephants is noise. This is deliberate: the topic tests whether you can follow given premises rather than what you know about the world. Aspirants who lose marks here usually lose them to instinct, not to logic.
When two conclusions are complementary - typically one saying 'some A are B' and the other 'no A is B', or one saying 'all' and the other 'some are not' - and neither of them follows on its own, the pair together may still follow as an either-or conclusion, because at least one of them has to be true in every arrangement. The two conditions must both hold: neither follows individually, and the two must be genuine complements sharing the same subject and predicate. SSC uses this less often than bank exams, but it does appear, so recognise it rather than defaulting to 'neither follows'.
The count is not fixed and moves from shift to shift, so treat any specific number you see quoted with suspicion. What is stable is that syllogistic reasoning and statement-conclusion are named in SSC's official General Intelligence syllabus and appear regularly within the 25-question reasoning section, often together with a Venn diagram question. For the syllabus and pattern applicable to your cycle, read the official notification on ssc.gov.in rather than relying on last year's breakdown.
Generally SSC's version uses fewer statements and fewer possibility-based conclusions than the banking pattern that scares most aspirants, which means the Venn method resolves it quickly. That said, it is not a rule you should lean on - difficulty drifts between cycles and shifts, and a harder set has appeared before. The safe approach is to prepare the full method including either-or, then enjoy it when the paper turns out to be gentler than you trained for.
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