RRB JE Junior Engineer · General Intelligence & Reasoning
Statement & Conclusion / Assumption
Evaluating whether conclusions, assumptions or inferences logically follow from given statements.
Statement–conclusion and statement–assumption questions pay when you keep the direction of inference clear. A conclusion is what the given words force next; an assumption is what must already be true for those words to make sense. Refuse every option that needs a fact the statement never gave — because real-world truth is not a licence to invent support — and distrust extremes, vague actions, and off-topic arguments the stem never earned.
- RRB JE Junior Engineer
- Medium level
- 6 concepts
- 44 practice questions
1Conclusion comes out; assumption sits behind
A conclusion is what logically follows from the statement — a result you can derive after reading only those words. An assumption is what must already be true for the statement to make sense — an unstated idea that sits behind the claim, not after it. Take a concrete stem and hold the direction: 'Submit the form before 5 PM to avoid a late fee.' A conclusion that follows is that submitting after 5 PM risks the late fee. An assumption sitting behind the warning is that a late fee is charged for late forms — without that, the warning has no point.
Mixing the two directions is the trap: treating a recommended action as a conclusion, or treating an explicit fact in the statement as an 'assumption'. Keep the arrow clear — conclusions come out; assumptions stay behind. Read whether the options are labelled conclusions or assumptions before you judge any of them. A recommendation, a wish, or a sentence already stated in the stem is not the thing the label asked for.
Figure. On 'Submit the form before 5 PM to avoid a late fee', the charged late fee sits behind the warning; that a late submit risks the fee comes out of the words.
How it works
- Name the askRead whether the options are labelled conclusions or assumptions before you judge any of them. The same sentence can be a valid assumption and an invalid conclusion, or the reverse.
- Place the arrowConclusion: does this follow from the words? Assumption: must this already be true for the words to make sense? Out of the statement versus behind it — two different questions.
- Reject wrong-direction optionsA recommendation, a wish, or a sentence already stated in the stem is not the thing the label asked for. An explicit 5 PM cutoff is a given fact, not an assumption.
| Label | Direction | Accept when |
|---|---|---|
| Conclusion | Out of the statement | It is a necessary consequence of the given words alone |
| Assumption | Behind the statement | Negating it makes the statement pointless or false |
| Neither | Off the arrow | It restates an explicit fact, adds outside news, or only 'might' be true |
Statement: 'Submit the form before 5 PM to avoid a late fee.' Which option is an assumption rather than a conclusion?
- Forms submitted after 5 PM attract a late fee
- Someone has already submitted a form today
- Every office uses a 5 PM deadline
The warning only makes sense if late submission causes a fee — that idea sits behind the notice. Option B invents an event the statement never mentions; option C adds a universal rule the statement does not support.
2Judge only from the given words
Accept a conclusion only if it follows strictly from the given statement. Real-world truth, probabilities and outside comparisons are irrelevant when the statement does not imply them. Ask: must this be true given only these words? If the honest answer is 'maybe', the conclusion does not follow. Statement: 'All the trains from the city were cancelled due to heavy rain.' Conclusion (I): no passenger could travel by train from the city that day. Travel by train requires a running train; none is running; (I) follows — no extra fact required.
The common trap is choosing an option because it is factually true in the world even though the statement does not support it — stick strictly to what is given. 'Most people in the town own bicycles' does not force 'No one in the town owns a car': cars are outside the fence. Underline only the facts the stem actually asserts; nothing from general knowledge enters the fence. 'Likely', 'sensible', or 'true in life' is not enough.
Figure. All trains cancelled forces no train travel that day. Most people own bicycles does not force no one owns a car — cars never entered the stem.
Order of attack
- Fence the statementUnderline only the facts the stem actually asserts; nothing from general knowledge enters the fence. 'All trains from the city cancelled' is inside; 'rain is dangerous' is outside.
- Ask 'must this be true?'For each conclusion, decide whether the statement alone forces it. 'Likely', 'sensible' or 'true in life' is not enough. No train service that day is forced; 'no one owns a car' is not.
- Reject extrasDrop any option that needs a comparison, cause, or fact the statement never stated. A true-in-the-world extra is still an extra.
Conclusion from a statement
Statement: 'All the trains from the city were cancelled due to heavy rain.' Conclusion (I): No passenger could travel by train from the city that day. Does (I) follow?
- All trains from the city cancelledNo train service leaves the city that day
- Travel by train requires a running trainTrain travel from the city is impossible that day
- Conclusion (I) as a necessary consequenceFollows — no extra fact required
Pro tip. A conclusion that restates the guaranteed effect of the statement follows; anything that needs an outside fact does not.
Statement: 'Most people in the town own bicycles.' Conclusion: 'No one in the town owns a car.' The conclusion
- Follows, because bicycle owners rarely own cars
- Does not follow — ownership of bicycles says nothing about cars
- Follows, because 'most' means the rest own nothing else
The statement never mentions cars. Real-world guesses about who owns what are outside the fence. 'Most' also does not force 'no one' for a different property.
3Negate the assumption; watch the statement fall
To check an assumption, negate it. If the negation makes the statement fall apart — pointless, contradictory, or unable to achieve its purpose — the assumption is valid. If the statement still makes sense after negation, the option is not a necessary assumption. Statement: 'Use our coaching to guarantee your success in SSC CGL.' Assumption (I): candidates want to succeed in SSC CGL. Negate (I): candidates do not want to succeed. A success guarantee is then pointless to that audience, so (I) is necessary.
The same test on a discount: 'The company launched a discount to boost sales.' Assumption: a discount can increase sales. Negate it — a discount cannot increase sales — and the launch loses its stated purpose, so the assumption follows. Assumptions are implicit. Anything already written explicitly in the statement is a given fact, not an assumption. Flip the candidate into its opposite in one clear sentence, re-read the speaker's claim under that negation, and keep the option only if the claim collapses.
Figure. Coaching guarantee: negate 'candidates want to succeed in SSC CGL'. If they do not want success, the offer is pointless, so the assumption is necessary.
Order of attack
- Write the negationFlip the candidate assumption into its opposite in one clear sentence. 'Candidates want to succeed' becomes 'Candidates do not want to succeed in SSC CGL'.
- Re-read the statementAsk whether the speaker's claim, warning or offer still has a purpose under that negation. A success guarantee offered to people who do not want success is pointless.
- Keep only the necessary onesValid if the statement collapses; reject if the statement still works fine without that idea. Implicit only: a sentence already in the stem is a given, not an assumption.
Testing an assumption
Statement: 'Use our coaching to guarantee your success in SSC CGL.' Assumption (I): Candidates want to succeed in SSC CGL. Does (I) follow?
- Negate (I)Candidates do not want to succeed in SSC CGL
- Re-read the coaching offer under that negationA success guarantee is pointless to that audience
- Statement loses its purposeAssumption (I) is necessary — it follows
Pro tip. Negate the assumption; if the advertisement or warning no longer makes sense, the assumption is implicit.
Statement: 'The company launched a discount to boost sales.' Assumption: 'A discount can increase sales.' Applying the negation test,
- The assumption is valid — without that belief the launch has no purpose
- The assumption is invalid — discounts always fail, so the company is wrong
- The assumption is invalid — it is already written word-for-word in the statement
Negating 'a discount can increase sales' leaves a company launching a discount for no reason. Real-world opinions about whether discounts work are outside the test; the assumption is also not an explicit sentence in the stem.
4Distrust extremes the statement never earned
Conclusions that use all, only, never, always, or no one usually fail unless the statement itself is that strong. A restrained restatement — 'some' from 'many', or a direct beneficial link already named — can follow; an absolute upgrade of the same idea does not. Statement: 'Many students in the city prefer online classes.' 'Some students prefer online classes' keeps the force and follows. 'All students prefer online classes' upgrades many to all and fails.
The trap is treating a mild statement as a universal law because the extreme option 'sounds decisive'. Circle all / only / never / always / no one in each option before you judge content, and accept the extreme only when the statement already uses equal force for the same claim. 'All the trains from the city were cancelled' does earn 'no train travel from the city that day' — same force, necessary effect. 'Improves health' does not earn 'everyone should do it' — that is a recommendation, not a consequence.
Figure. From 'Many students in the city prefer online classes', some prefer online keeps the force and follows. All prefer online upgrades many to all and fails.
How it works
- Mark force wordsCircle all / only / never / always / no one in each option before you judge content. The force word is often the whole defect; the rest of the sentence can look like a restatement.
- Match the stem's forceAccept the extreme only when the statement already uses equal force for the same claim. Many does not earn all; all-cancelled does earn no train travel that day.
- Prefer the restrained twinIf one option restates the statement modestly and another upgrades it to a universal, keep the modest one. 'Some prefer X' from 'many prefer X' is the restrained twin.
| Statement force | Option force | Ruling |
|---|---|---|
| Many / some / often | All / no one / never | Reject — absolute upgrade |
| Many prefer X | Some prefer X | Accept — restrained restatement |
| All trains cancelled | No train travel that day | Accept — same force, necessary effect |
| Improves health | Everyone should do it | Reject — recommendation, not consequence |
Statement: 'Many students in the city prefer online classes.' Which conclusion follows?
- No student likes offline classes
- Some students prefer online classes
- Every student in the city takes only online classes
'Many prefer online' already forces 'some prefer online'. 'No student likes offline' and 'every student takes only online' are absolute upgrades the statement never earned.
5A course of action must solve the stated problem
A suggested course of action follows only when it directly addresses a problem the statement actually states and is practical to carry out. Vague slogans, extreme punishments, and actions that assume a different problem do not follow. Statement: 'Many accidents occur at a dark junction.' Installing lighting (or a signal) at that junction hits the stated darkness with a workable step, so it follows. 'People should drive carefully' is a slogan without a concrete step. 'Ban all cars from the city' overshoots. 'Build a new library' solves a different problem.
Judge the action against the stated difficulty alone — not against a better policy you wish the statement had mentioned. Write the difficulty in one short phrase (dark junction, accidents), ask whether the proposed action attacks that difficulty, and reject actions that are vague, extreme, or impossible under ordinary conditions the exam assumes. Ideal but unworkable steps fail the same way slogans do.
Figure. Many accidents at a dark junction: lighting hits the stated darkness. Drive carefully is a slogan, a city-wide ban is extreme, and a library solves a different problem.
Order of attack
- Name the problemWrite the difficulty the statement asserts in one short phrase. 'Many accidents occur at a dark junction' names darkness-at-the-junction, not 'traffic in general'.
- Test directnessAsk whether the proposed action attacks that difficulty, or a neighbouring one the stem never raised. Lighting the junction is direct; a new library is a different problem.
- Test practicalityReject actions that are vague, extreme, or impossible under ordinary conditions the exam assumes. 'Drive carefully' is vague; 'ban all cars' is extreme.
| Action type | Follows? | Why |
|---|---|---|
| Direct and practical fix | Yes | Hits the stated problem with a workable step |
| Vague slogan | No | Names a wish without a concrete step |
| Extreme / punitive leap | No | Overshoots the problem the statement gave |
| Solves a different problem | No | Needs a difficulty the stem never stated |
Statement: 'Many accidents occur at a dark junction.' Which course of action follows?
- Install adequate lighting and clear signage at the junction
- Ban all private vehicles from the entire city immediately
- Remind citizens that life is precious
Lighting and signage attack the darkness problem stated. A city-wide ban is extreme and wider than the junction; a slogan is vague and does not fix the stated cause.
6Strong means relevant and significant
When a statement is followed by arguments for or against it, a strong argument is both directly relevant to the issue and significant in weight. A weak argument is ambiguous, trivial, or off-topic — even when it is emotionally appealing. Statement: 'Should the city build a new public library?' Argument: 'Yes — reading improves literacy, and a library gives free access to books.' That argument bears on the issue (a library as access to reading) with real force, so it is strong.
Do not score an argument by whether you personally agree with the statement; score it by whether it bears on the issue with real force. An off-topic but true remark ('the city has good weather') is weak because truth does not create relevance. A relevant but trivial point ('a library would have a door') touches the issue without weight. Sentiment without significance ('libraries are inspiring') stays weak. Isolate the issue, check relevance, then check significance — in that order.
Strong arguments use the stem's facts and address the issue directly. Weak ones lean on extremes, irrelevance, or missing links.
How it works
- Isolate the issueName the policy or claim the statement puts on the table. 'Should the city build a new public library?' is about building that library, not about weather or doors.
- Check relevanceIf the argument talks about a different issue, it is weak regardless of how true it sounds. Good weather is true and off-topic; it cannot become strong by being true.
- Check significanceA relevant but trivial or ambiguous point stays weak; only a weighty, on-point reason is strong. Free access to books is significant; 'a library would have a door' is not.
| Argument | Verdict | Reason |
|---|---|---|
| Directly relevant and significant | Strong | Bears on the issue with real force |
| Off-topic but true | Weak | Truth does not create relevance |
| Relevant but trivial / vague | Weak | Touches the issue without weight |
| Appeals only to emotion | Weak | Sentiment is not significance |
Statement: 'Should the city build a new public library?' Argument: 'Yes — reading improves literacy, and a library gives free access to books.' This argument is
- Strong — it is directly relevant and significant to the proposal
- Weak — libraries are outdated, so the argument fails in the real world
- Weak — it does not mention the cost of construction
Literacy access bears directly and significantly on whether to build a library. Outside opinions about libraries being outdated, or demanding every cost detail, are not the strong/weak test the concept uses.
Notes
- Conclusion vs Assumption: A conclusion is what logically follows FROM the statement; an assumption is what must already be TRUE (taken for granted) for the statement to make sense. Keep the direction of inference clear.
- Only Stated Information Rule: Accept a conclusion only if it follows strictly from the given statement without adding outside knowledge or probabilities. Real-world truth is irrelevant if not implied.
- Assumption Test (Negation): To check an assumption, negate it; if the negation makes the statement fall apart, the assumption is valid. This is the most reliable assumption technique.
- Course of Action: A suggested action follows only if it directly addresses a problem stated and is practical; vague or extreme actions do not follow.
- Common trap: Choosing a conclusion because it is factually true in the real world even though the statement does not support it - stick strictly to what is given.
Formulas
- Conclusion follows if it is a necessary logical consequence of the statement alone.
- Assumption is valid if its negation invalidates the statement (negation test).
- Reject conclusions requiring extra facts, comparisons, or probabilities not in the statement.
- 'Strong' argument = directly relevant + significant; 'weak' = ambiguous, trivial, or off-topic.
- Course of action follows if it is practical and directly solves the stated problem.
Exam traps & shortcuts
- Use the negation test for assumptions: negate the option and see if the statement collapses.
- Ban outside knowledge - answer only from the words given, not from what you know to be true.
- For conclusions, ask 'must this be true given only the statement?' - if maybe, it does not follow.
- Discard extreme wording (all, never, only) in options unless the statement itself is that strong.
Reference tables
Same discipline for every subtype: stay inside the given words, then apply the subtype's own test.
| Subtype | Core test | Usual reject |
|---|---|---|
| Conclusion | Must this follow from the statement alone? | Outside facts; absolute upgrades |
| Assumption | Does negating it collapse the statement? | Explicit restatements; optional extras |
| Course of action | Direct and practical for the stated problem? | Vague slogans; extreme leaps |
| Argument strength | Relevant and significant? | Off-topic truths; trivial points |
Recap
Before a statement set, hold only this.
- Direction
- Conclusions come out of the statement; assumptions sit behind it. Do not swap the arrow.
- Fence
- Judge only from the given words. Real-world truth without support does not follow.
- Negation
- Flip the assumption; if the statement loses its purpose, the assumption is necessary.
- Force
- All / never / only need equal force in the statement. Mild stems do not earn absolute options.
- Action / argument
- Courses of action must be practical and on-problem; strong arguments must be relevant and significant.
Practise Statement & Conclusion / Assumption
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- 44 exam-style questions on this topic, with explanations
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