MDCAT Logical Reasoning MCQs: Practice Questions & Prep

Logical Reasoning is the newest, smallest MDCAT section — just 29 questions. Sample analogies, series, coding-decoding, blood relations and syllogism MCQs to pick up easy marks few candidates practice for.

Logical Reasoning is the newest and smallest section of the MDCAT syllabus — just 29 questions in HighYield's MDCAT question bank, compared to hundreds each in Biology, Chemistry and Physics. But because so few candidates practice it specifically, it's some of the easiest weight to pick up. Below is a sample set covering the main question types.

Analogies & Classification

1. Pen is to Write as Knife is to:

A) Sharp
B) Cut ✅
C) Kitchen
D) Metal

2. Which word does not belong with the others?

A) Trout
B) Salmon
C) Dolphin ✅
D) Tuna

Number & Letter Series

3. Find the next number: 2, 4, 8, 16, ?

A) 24
B) 30
C) 32 ✅
D) 20

4. Find the next number: 3, 6, 11, 18, 27, ?

A) 36
B) 38 ✅
C) 40
D) 34

5. Find the next letter: B, D, G, K, ?

A) N
B) O
C) P ✅
D) M

Coding-Decoding

6. If CAT is coded as DBU, how is DOG coded in the same pattern?

A) EPH ✅
B) EPI
C) FQH
D) EOH

Blood Relations & Direction Sense

7. Pointing to a man, a woman says, "His mother is the only daughter of my mother." How is the woman related to the man?

A) Sister
B) Mother ✅
C) Aunt
D) Daughter

8. A man walks 5 km to the North, then turns right and walks 3 km, then turns right again and walks 5 km. How far is he from his starting point?

A) 3 km ✅
B) 8 km
C) 13 km
D) 5 km

Syllogisms

9. All roses are flowers. Some flowers fade quickly. Which conclusion follows?

A) All roses fade quickly
B) Some flowers are roses ✅
C) No roses fade quickly
D) All flowers are roses

Why the Smallest Section Is Still Worth Practicing

With only a handful of marks at stake, it's tempting to skip Logical Reasoning prep entirely and rely on general aptitude. But because most candidates do exactly that, a small amount of targeted practice on analogies, series and coding patterns converts into marks that are easy to leave on the table otherwise.

HighYield's MDCAT question bank includes a dedicated Logical Reasoning section alongside Biology, Chemistry, Physics and English, every question explained. For more on how the four main subjects break down, see the most repeated MDCAT MCQs by subject.