18 = 2 x 32
81 = 34
108 = 22 x 33
LCM = 22 x 34 = 4 x 81 = 324
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The least common multiple of 81 and 108 is 324.
324
The LCM is: 216
HCF of 12 and 18 is 6 and LCM of 108 and 72 is 216 So: 6 times 216 = 1296
LCM of 36 and 108 is 108.