Question

The LCM of 15, 18 and 24 is:

• A. 3
• B. 540
• C. 6
• D. 360

Answer 1

Answer:

D. 360

Factors of 15 $=3\times{5}$

Factors of 18 $=2\times{3}\times{3}$

Factors of 24 $=2\times{2}\times{3}\times{2}$

∴ LCM $=2\times{2}\times{2}\times{3}\times{3}\times{5}=360$