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 11 of 12
- A. Ali is taller than Hamza.
- B. Hamza is taller than Ali.
- C. Bilal is taller than Ali.
- D. Hamza is taller than Bilal.
Explanation: Ali is taller than Bilal, and Bilal is taller than Hamza. Therefore, Ali must be taller than Hamza.
Correct answer: Ali is taller than Hamza.- A. Nadia is trained.
- B. Nadia is a doctor.
- C. All trained people are pharmacists.
- D. No pharmacist is trained.
Explanation: Nadia belongs to the group of pharmacists. Since every pharmacist is trained, Nadia must be trained.
Correct answer: Nadia is trained.- A. M is before P.
- B. P is before M.
- C. N is before M.
- D. P is before N.
Explanation: M comes before N, while P comes after N. Thus, M must come before P in the queue.
Correct answer: M is before P.- A. Some teachers are thoughtful.
- B. All teachers are thoughtful.
- C. Some thoughtful people are not teachers.
- D. No teachers are poets.
Explanation: At least one teacher is a poet. Since every poet is thoughtful, that teacher must also be thoughtful.
Correct answer: Some teachers are thoughtful.- A. Ahmed is not careless.
- B. Ahmed is not licensed.
- C. Every careless person is a pilot.
- D. Some careless people are licensed.
Explanation: Ahmed is a pilot, so he is licensed. No licensed person is careless, so Ahmed cannot be careless.
Correct answer: Ahmed is not careless.- A. Some red cards are registered.
- B. All red cards are registered.
- C. No red cards are numbered.
- D. Some registered cards are not red.
Explanation: At least one red card is numbered. Since every numbered card is registered, that red card must be registered.
Correct answer: Some red cards are registered.207. J is to the left of F. F is to the left of G. H is to the right of G. Which conclusion must follow?
- A. J is to the left of H.
- B. H is to the left of F.
- C. G is to the left of J.
- D. F is to the right of H.
Explanation: The order is J, F, G, H from left to right. Therefore, J must be to the left of H.
Correct answer: J is to the left of H.- A. Some clinic workers are not careless.
- B. All clinic workers are not careless.
- C. Some careless people are doctors.
- D. No clinic workers are doctors.
Explanation: At least one clinic worker is a doctor, and every doctor is a graduate. Since no graduate is careless, that clinic worker is not careless.
Correct answer: Some clinic workers are not careless.- A. Some D objects are not C objects.
- B. All D objects are not C objects.
- C. Some D objects are C objects.
- D. No D objects are A objects.
Explanation: The D object mentioned is also an A object, so it is a B object. Since no B object is C, that particular D object is not C.
Correct answer: Some D objects are not C objects.- A. Ayesha finishes before Farah.
- B. Farah finishes before Ayesha.
- C. Bilal finishes before Hamza.
- D. Danish finishes before Bilal.
Explanation: Ayesha is before Bilal, Bilal is before Danish, and Danish is before Farah.
Correct answer: Ayesha finishes before Farah.- A. The blue lantern is made of metal.
- B. The blue lantern is made of glass.
- C. Every metal object is a lantern.
- D. Every lantern in the box is blue.
Explanation: The blue lantern belongs to the group of lanterns in the storage box. Since every lantern in that group is metal, the blue lantern must be…
Correct answer: The blue lantern is made of metal.- A. Rehan is not dry.
- B. Rehan is not a swimmer.
- C. Every dry person is a swimmer.
- D. Some swimmers are dry.
Explanation: The rule says that no swimmer can be dry. Because Rehan is a swimmer, Rehan must not be dry.
Correct answer: Rehan is not dry.- A. Some school medals are awarded.
- B. All school medals are awarded.
- C. Some awarded medals are not bronze.
- D. All bronze objects are school medals.
Explanation: At least one school medal is bronze, and every bronze medal is awarded. Therefore, at least one school medal is awarded.
Correct answer: Some school medals are awarded.- A. Some designers are not careless.
- B. All designers are not careless.
- C. Some careless people are designers.
- D. All architects are designers.
Explanation: The designers who are architects belong to a group containing no careless people. Therefore, some designers must be not careless.
Correct answer: Some designers are not careless.- A. Some musicians are not absent.
- B. All musicians attend the workshop.
- C. Some teachers are absent.
- D. All non-absent people are musicians.
Explanation: Some musicians are teachers, so those musicians attend the workshop. Since workshop attendees are not absent, some musicians are not absent.
Correct answer: Some musicians are not absent.- A. C is before D.
- B. D is before C.
- C. C is immediately before D.
- D. A is after D.
Explanation: Queue order passes from C to A, then B, then D. Therefore, C must be before D, although they need not be next to each other.
Correct answer: C is before D.- A. Some identity-card holders are not new.
- B. All identity-card holders are senior.
- C. Some new people are panel members.
- D. All senior people are interns.
Explanation: Some interns are panel members, so they are senior. Senior people are not new, and every intern has an identity card.
Correct answer: Some identity-card holders are not new.- A. Some technicians are not careless.
- B. All licensed people are readers.
- C. Some careless people are writers.
- D. All readers are technicians.
Explanation: The technicians who are writers are also readers. Since no reader is careless, those technicians are not careless.
Correct answer: Some technicians are not careless.- A. Some gardeners are not reckless.
- B. All employed people are patient.
- C. Some artists are reckless.
- D. All gardeners are musicians.
Explanation: Some gardeners are musicians, so they are artists and then patient. Since no patient person is reckless, those gardeners are not reckless.
Correct answer: Some gardeners are not reckless.- A. Some assistants are not on the unregistered list.
- B. All assistants are on the unregistered list.
- C. Some curators have no identity card.
- D. All people working on weekends are curators.
Explanation: Some assistants are curators, so they are trained and have identity cards.
Correct answer: Some assistants are not on the unregistered list.