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MDCAT Logical Reasoning MCQs with answers

Practise MDCAT Logical Reasoning (PMDC 2025-26) with 150 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

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MDCAT Logical Reasoning MCQs with answers

Practise MDCAT Logical Reasoning (PMDC 2025-26) with 150 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

150 questions · 4 chapters

What each chapter covers 4 chapters

The questions follow the syllabus chapter by chapter. You can test the whole subject or one chapter at a time.

  1. Logical reasoning · Critical thinking 25 questionsCritical thinking
  2. Logical reasoning · Series 25 questionsLetter and symbol series
  3. Logical reasoning · Deduction 50 questionsLogical deductions, Logical problems
  4. Logical reasoning · Decisions 50 questionsCourse of action, Cause and effect
Sample MDCAT Logical Reasoning MCQs with answers 12 questions

12 questions from the test, one or two from each chapter. Try each one, then open the answer.

1. Using a phone in class must harm learning: the students who use their phones most in class have the lowest grades.
Which statement, if true, most weakens this argument?

  1. A
    Some teachers use phones to show videos in class.
  2. B
    Students who are already struggling tend to lose interest and turn to their phones.
  3. C
    Students with the highest grades also own phones.
  4. D
    Phones are becoming cheaper every year.
Show answer

Answer: B. If low grades lead to phone use, the cause runs the other way. Owning a phone is not the same as using it in class, so the option about top students owning phones does not weaken.

2. Find the next term: 4, 6, 12, 14, 28, 30, ?

  1. A
    56
  2. B
    60
  3. C
    32
  4. D
    62
Show answer

Answer: B. The steps alternate +2 and ×2: 28 + 2 = 30, then 30 × 2 = 60. 32 repeats the +2 step.

3. In a row of students, Ayesha is 9th from the left and 14th from the right. How many students are in the row?

  1. A
    23
  2. B
    21
  3. C
    22
  4. D
    24
Show answer

Answer: C. Total = 9 + 14 − 1 = 22, because Ayesha is counted in both positions. Adding to get 23 counts her twice.

4. Statement I: The college library now stays open until 10 pm.
Statement II: More students now use the library in the evenings.
Statement III: Before the exams, students asked for longer library hours.
Which order shows cause leading to effect?

  1. A
    III → I → II
  2. B
    II → I → III
  3. C
    I → III → II
  4. D
    II → III → I
Show answer

Answer: A. The students' request (III) led to the longer hours (I), which allowed more evening use (II). Putting II first reverses the chain, since evening use followed the new hours.

5. Patients at Clinic X recover from knee surgery faster than patients at other clinics, so the new physiotherapy routine used at Clinic X must speed recovery.
Which statement, if true, most strengthens this argument?

  1. A
    Clinic X has a larger waiting room than the other clinics.
  2. B
    Clinic X opened five years ago.
  3. C
    The new routine was first developed abroad.
  4. D
    Patients at Clinic X are of similar age and health to patients at the other clinics.
Show answer

Answer: D. It rules out the alternative that Clinic X simply treats younger or healthier patients, leaving the routine as the likely cause.

6. Find the next term: AB, DE, GH, JK, ?

  1. A
    NO
  2. B
    LM
  3. C
    MN
  4. D
    KL
Show answer

Answer: C. Each pair starts 3 letters after the last pair started: A, D, G, J, M. So MN.

7. If 3 March was a Monday, what day of the week was 27 March in the same year?

  1. A
    Monday
  2. B
    Wednesday
  3. C
    Thursday
  4. D
    Friday
Show answer

Answer: C. 27 − 3 = 24 days later; 24 = 3 weeks + 3 days, so it is 3 days after Monday, which is Thursday.

8. Infection rates are rising in a hospital's wards, and an audit shows that staff wash their hands much less often than they should. Which course of action logically follows?

  1. A
    Put hand-rub dispensers at every bedside and check hand hygiene regularly
  2. B
    Give every patient antibiotics on admission
  3. C
    Stop admitting new patients
  4. D
    Dismiss all ward nurses
Show answer

Answer: A. Poor hand hygiene is the identified cause, so making hand-rub easy to reach and auditing it acts directly. Routine antibiotics increase resistance, and the other options are extreme.

9. The rise in dengue cases in the district this year was caused by flood water left standing after the monsoon.
Which statement, if true, most strengthens this claim?

  1. A
    Dengue causes high fever and joint pain.
  2. B
    Dengue cases also rose in towns that had no flooding.
  3. C
    The district hospital hired more nurses this year.
  4. D
    Dengue cases rose most in the neighbourhoods where flood water stood longest.
Show answer

Answer: D. A link between longer-standing water and more cases supports the cause. A rise in towns without floods would weaken it.

10. Find the next term: 2, 6, 12, 20, 30, ?

  1. A
    44
  2. B
    40
  3. C
    42
  4. D
    36
Show answer

Answer: C. Differences are 4, 6, 8, 10, so the next is 30 + 12 = 42. (Each term is n(n + 1).) 40 comes from repeating the last difference.

11. Ali, Bano, Chand, Dua and Ehsan sit in a row facing south. Chand is at the extreme left end of the row. Dua sits immediately next to Chand. Ali sits immediately to the right of Bano. Ehsan is not at either end. Who is at the extreme right end?

  1. A
    Chand
  2. B
    Bano
  3. C
    Ehsan
  4. D
    Ali
Show answer

Answer: D. Facing south, everyone's right is the viewer's left. Chand is at their left end with Dua beside him; Ehsan cannot be at the far end, so he is in the middle, and Ali (to Bano's right) is at the right end. Chand is the slip of switching to the viewer's left and right only for the final question.

12. Statement I: Fewer patients came to the hospital outpatient department on Eid day.
Statement II: Most shops in the city were closed on Eid day.
Which is correct?

  1. A
    Statement I is the cause and Statement II is its effect
  2. B
    Statement II is the cause and Statement I is its effect
  3. C
    Both statements are effects of a common cause
  4. D
    The statements are independent of each other
Show answer

Answer: C. Closed shops do not keep patients away from hospital, nor the other way round. Both result from the Eid holiday, a common cause.

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Ways to practise 5 ways

MDCAT Logical Reasoning: frequently asked questions

Is this MDCAT Logical Reasoning test free?

Yes. Every test, answer and explanation is free, and you do not need an account. Sign in only if you want your results kept across devices.

How many MDCAT Logical Reasoning questions are there?

150 MCQs with answers, covering 4 chapters of the syllabus. Each test draws new questions, so you can practise many times.

How much of MDCAT Logical Reasoning does this cover?

Logical Reasoning is 9 of the 180 MDCAT MCQs (5%). Our MDCAT Logical Reasoning test covers every unit of the syllabus.

Are these MDCAT Logical Reasoning past paper questions?

No. The 150 MCQs are our own, written to the syllabus in the style of the exam.

How is the test marked?

Instantly. You see your score, the right answer and an explanation for every question, and the topics to work on next. Questions you got wrong are saved so you can retry them.

Can I practise one chapter or only my weak topics?

Yes. Pick a chapter, build your own test from chosen topics, or practise your weakest topics and your past mistakes.

Does it work on a phone?

Yes. It runs in the browser on any phone or computer, and you can add it to your home screen like an app.

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