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RRB NTPC Statement and Conclusion — practice questions

Explore 38 free Statement and Conclusion questions in RRB NTPC Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

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Statement and Conclusion questions and exercises with answers

Showing questions 1–30 of 38.

If all premises of a valid argument are true, its conclusion must beRead the answer and worked solution →Deductive arguments that follow no valid rule of inference are calledRead the answer and worked solution →If it rains, roads get wet. Roads are wet. So it rained. This isRead the answer and worked solution →Which reasoning gives no genuinely new information beyond its premises?Read the answer and worked solution →A conclusion that is only probable, not certain, comes from which reasoning?Read the answer and worked solution →Every raven in a big random sample is black, so all ravens are black. This conclusion isRead the answer and worked solution →An inductive generalization proceeds from a sample to a conclusion about theRead the answer and worked solution →A statistical syllogism moves from a group generalization to a conclusion aboutRead the answer and worked solution →Six of ten club members like chess, so 60% of all people do. This is weak because the sample isRead the answer and worked solution →Argument from analogy infers a further shared property fromRead the answer and worked solution →In an inductive argument with all premises true, the conclusionRead the answer and worked solution →A syllogism is made of two premises and aRead the answer and worked solution →The three main syllogism types are categorical, hypothetical andRead the answer and worked solution →Which syllogism uses an either-or premise?Read the answer and worked solution →A conditional syllogism is another name for which type?Read the answer and worked solution →A chain of syllogisms where one conclusion becomes the next premise is aRead the answer and worked solution →A premise of the form 'All S are P' is which kind of proposition?Read the answer and worked solution →Deduction combines existing statements, whereas induction predicts facts fromRead the answer and worked solution →Statements: All pens are books. All books are tables. Conclusion: All pens are tables. The conclusionRead the answer and worked solution →Statements: Some books are pens. All pens are pencils. Conclusion: Some books are pencils. The conclusionRead the answer and worked solution →Statements: All roses are flowers. Some flowers fade. Conclusion: Some roses fade. The conclusionRead the answer and worked solution →Statements: No fish is a bird. All birds can fly. Conclusion: No fish can fly. The conclusionRead the answer and worked solution →Statements: All students are readers. Ravi is a student. Conclusion: Ravi is a reader. The conclusionRead the answer and worked solution →If it rains, the match is cancelled. It rains. So the match is cancelled. This usesRead the answer and worked solution →If the lamp is on, the switch is pressed. The switch is pressed. So the lamp is on. This isRead the answer and worked solution →Three of four balls drawn from a 20-ball urn are black. Are exactly 15 black?Read the answer and worked solution →All frogs are amphibians. No cat is an amphibian. Conclusion: no cat is a frog.Read the answer and worked solution →Does an invalid argument always have a false conclusion?Read the answer and worked solution →Everyone who eats carrots is a quarterback. John eats carrots. So John is a quarterback. This argument isRead the answer and worked solution →Modus ponens is also calledRead the answer and worked solution →

Worked practice questions

If all premises of a valid argument are true, its conclusion must be

  1. possibly false
  2. unrelated to them
  3. necessarily true
  4. only probably true
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Correct answer: C. necessarily true

Validity means the premises cannot be true while the conclusion is false, so true premises force a true conclusion.

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Deductive arguments that follow no valid rule of inference are called

  1. sound arguments
  2. plain hypotheses
  3. formal fallacies
  4. strong inductions
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Correct answer: C. formal fallacies

An argument that breaks every valid inference rule commits an error of logical form, called a formal fallacy.

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If it rains, roads get wet. Roads are wet. So it rained. This is

  1. an invalid fallacy
  2. a valid deduction
  3. a sound argument
  4. modus tollens
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Correct answer: A. an invalid fallacy

Roads can be wet for other reasons, so concluding the antecedent from the consequent is the fallacy of affirming the consequent.

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More Reasoning topics

Order of OperationsFloor PuzzleNumber SeriesVenn DiagramsData InterpretationStatement and Courses of ActionSyllogismData Sufficiency