MCQ
Three common multiples of $18$ and $6$ are:
  • A
    $18, 6, 9$
  • B
    $18, 36, 6$
  • $36, 54, 72$
  • D
    None

Answer

Correct option: C.
$36, 54, 72$

 Multiples of $18 = 18, 36, 54...$
Multiples of $6 = 6, 12, 18, ...$
The first common multiple will be $18$
And the next common multiples will be multiples of $18$
Hence, first three common multiples of $18, 6$ are $18, 36, 54$

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