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What is the L.C.M. of 9 and 15?

Practice Questions

Q1
What is the L.C.M. of 9 and 15?
  1. 45
  2. 30
  3. 60
  4. 75

Questions & Step-by-Step Solutions

What is the L.C.M. of 9 and 15?
  • Step 1: List the multiples of 9. The first few multiples are 9, 18, 27, 36, 45, ...
  • Step 2: List the multiples of 15. The first few multiples are 15, 30, 45, 60, ...
  • Step 3: Find the smallest multiple that appears in both lists. The multiples of 9 are 9, 18, 27, 36, 45 and the multiples of 15 are 15, 30, 45.
  • Step 4: The smallest common multiple is 45.
  • Step 5: Therefore, the L.C.M. of 9 and 15 is 45.
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