Free Logical Deductions MCQs with Answers
240 Logical Deductions MCQs from Analytical and Logical Reasoning, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Logical deductions require conclusions to be drawn from stated facts, conditions and relationships without adding outside information. The work includes handling all, some and none statements, necessary and sufficient conditions, ordering restrictions, true or false conclusions, and the difference between what must be true and what could be true.
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Read the Logical Deductions notesFree MDCAT chapter notes with key terms240 questions · page 10 of 12
- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: The correct answer is Only I. Conclusion I is derived from the fact that if some roads are wide and all roads are long, then the wide…
Correct answer: Only I- A. Only I
- B. Only II
- C. Both I and II
- D. Neither I nor II
Explanation: The correct answer is 'Only I'. The statement 'Some boys are students' combined with 'All students are hardworking' leads to the inference…
Correct answer: Only I- A. Only I
- B. None
- C. Both
- D. Only II
Explanation: The given statements are: 'All fruits are juicy' and 'Some juicy things are sour.' These statements can be visualized using Venn diagrams.
Correct answer: None- A. Only I
- B. Only II
- C. None
- D. Both
Explanation: To determine the validity of the conclusions, we analyze the given statements:Statements: Some watches are digital.
Correct answer: Only I- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: To solve this, visualize the relationships using a Venn diagram. The statement 'All players are fit' means that the set of players is…
Correct answer: Only I- A. Only II
- B. Only I
- C. Both
- D. None
Explanation: To determine the validity of the conclusions, consider each statement logically.
Correct answer: Only II- A. Only II
- B. Both
- C. Only I
- D. None
Explanation: The correct answer is Option A. Conclusion II follows because if all trains are fast and no bus is a train, then some fast entities (the…
Correct answer: Only II- A. Only II
- B. Only I
- C. None
- D. Both
Explanation: To determine which conclusions logically follow from the given statements, we can visualize the relationships using a Venn diagram.
Correct answer: Only II- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: To solve this problem, let's analyze the statements: 'No girl is rude' and 'All rude are foolish'.
Correct answer: Only I- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: In logical deduction, we examine the provided statements and draw conclusions based on them.
Correct answer: Only I- A. Only III
- B. Only I
- C. I and II
- D. None
Explanation: The statements provided establish that 'All schools are institutions' and 'Some institutions are buildings.' Conclusion III, 'Some…
Correct answer: Only III- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: To solve this problem, analyze the relationships given in the statements:Statement 1: All chocolates are tasty.
Correct answer: Only I- A. None
- B. Only I
- C. Both
- D. Only II
Explanation: The correct answer is Option A: None. The statements provide that some candies are chocolates and some chocolates are sweets.
Correct answer: None- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: To solve this logical reasoning question, evaluate each conclusion using the provided statements.
Correct answer: Only I- A. Only II
- B. Only I
- C. Both
- D. None
Explanation: In the given statements, 'All rockets are machines' implies that every rocket is a machine.
Correct answer: Only II- A. Only II
- B. Only I
- C. Both
- D. None
Explanation: In this logical deduction problem, we are given two statements: 'All dresses are cloth' and 'No cloth is plastic.' Based on these…
Correct answer: Only II- A. None
- B. Only II
- C. Only I
- D. Both
Explanation: The statements provided are: 'All toys are plastic' and 'Some plastics are harmful.' From these, we cannot definitively conclude that…
Correct answer: None- A. Only I
- B. Only II
- C. Both
- D. None
Explanation: The correct answer is Option A: Only I.Conclusion I is valid because the premise establishes that all fruits are healthy and some of these…
Correct answer: Only I- A. None
- B. Only II
- C. Only I
- D. Both
Explanation: Conclusion I, 'Some bats are round,' is correct. From the statements, 'Some bats are balls' and 'All balls are round,' we can deduce that…
Correct answer: Only I- A. Only I
- B. Only II
- C. Both I and II
- D. Neither I nor II
Explanation: Conclusion I: All coins are shapes. True, because coins ⊆ rounds ⊆ shapes.Conclusion II: Some shapes are coins.
Correct answer: Both I and II