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Question

What is the LCM of 18 and 9:

  1. 9
  2. 12
  3. 22
  4. 18

The correct answer is: 18


    2          18       9
    3          9          9
    3          3          3
    1          1
    LCM of 18 and 9 = 2*3*3 =18

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