Multiple choice

What is the LCM of 18 and 7?

  1. 18

  2. 112

  3. 126

  4. 128
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C Correct answer
Explanation

Multiples of 18 = 18, 36, 54, 72, 90, 108, 126, 144, 162, ... Multiples of 7 = 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 126, ... LCM = 126

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