Find the LCM of 15, 20, and 30.
A45
B60
C90
D120
Explanation
Prime factorizations: 15 = 3*5, 20 = 2^2*5, 30 = 2*3*5. LCM = 2^2 * 3 * 5 = 60.
Exam Relevance
- Topic: Number System
- Subtopic: LCM
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