What is the LCM of 4, 9, 3?

$L C M = 36$ $LCM=36$

List the multiples of each number , then pick the smallest common one.

multiples 4: ${4,8,12,16,32,color(red)36,.....}$

multiples of 9: ${9,18,27,color(red)36,45,.....}$

multiples of 3: ${3,6,9,12,15,18,21,24,27,30,33,color(red)36,...}$

$LCM=36$