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What is the LCM of 12, 15, and 20?

Practice Questions

Q1
What is the LCM of 12, 15, and 20?
  1. 60
  2. 120
  3. 180
  4. 240

Questions & Step-by-Step Solutions

What is the LCM of 12, 15, and 20?
Correct Answer: 60
  • Step 1: List the multiples of each number.
  • Multiples of 12: 12, 24, 36, 48, 60, 72, ...
  • Multiples of 15: 15, 30, 45, 60, 75, ...
  • Multiples of 20: 20, 40, 60, 80, ...
  • Step 2: Find the smallest common multiple from the lists.
  • Look at the multiples: 60 is present in all three lists.
  • Step 3: Conclude that the LCM is 60.
  • The LCM of 12, 15, and 20 is 60.
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