LCM of 102 and 68 is 204.
Write the numbers in prime factorisation in power form; for the LCM multiply together the highest power of each prime across the numbers:
102 = 2 x 3 x 17
68 = 22 x 17
LCM = 22 x 3 x 17 = 204
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LCM(68, 102) = 204 HCF(68, 102) = 34
The LCM is 102.
The GCF is 68, the LCM is 68
The LCM of 102 and 184 is: 9,384
Since 17 is a factor of 68, their LCM is 68