What is the greatest common factor (GCF) of 36 and 39?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: C. 3.
- A. 468
Why not A: “468” is not 3.
- B. 75
Why not B: “75” is not 3.
- C. 3 ✓
- D. 6
Why not D: “6” is not 3.
Correct answer
C. 3
Explanation
3 is the value that answers “What is the greatest common factor (GCF) of 36 and 39” (option C). Option A (468) is a different value from 3. Option B (75) is a different value from 3. Option D (6) is a different value from 3. Keep 3 as the GRE fact for this stem.
Source: Original practice question, MCQsHub
Tags: American Exams, GRE, Quant, Number Properties
Submitted by: MCQsHub Editorial
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