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What is the LCM of 12 and 18?

A$6$
B$24$
C$36$
D$72$
Answer & Solution
Correct answer: C. $36$
12 = 2² × 3. 18 = 2 × 3². LCM = largest power of each prime = 2² × 3² = 4 × 9 = 36.
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