What is the least common multiple (LCM) of 18 and 15?
Difficulty: Medium
About this MCQ
Medium ACT item. Correct choice: D. 90.
- A. 108
Why not A: “108” is not 90.
- B. 3
Why not B: “3” is not 90.
- C. 270
Why not C: “270” is not 90.
- D. 90 ✓
Correct answer
D. 90
Explanation
90 is the value that answers “What is the least common multiple (LCM) of 18 and 15” (option D). Option A (108) is a different value from 90. Option B (3) is a different value from 90. Option C (270) is a different value from 90. Keep 90 as the ACT fact for this stem.
Source: Original practice question, MCQsHub
Tags: American Exams, ACT, Quant, Number Properties
Submitted by: MCQsHub Editorial