Question

Given that the LCM of 306 and 657 is 22338, what is the LCM of 102, 306 and 657

• A. 1
• B. 22338
• C. 22338 x 102
• D. None of these

Answer 1

The correct option is B

22338

Observe that $306=102\times 2$ i.e., 306 is a multiple of 102 , so the LCM of 306 and 102 is 306 .
So the LCM of 102, 306 and 657 is the same as the LCM of 306 and 657.
Given that LCM of 306 and 657 is 22338.
Therefore LCM of 102, 306, 657 is also 22338