Question

Which of the following cannot be the hcf of two numbers whose lcm is 120?

Answer 1

Answer:

Find the number that cannot be the HCF of given LCM

Since HCF is always a factor of the LCM. Therefore, HCF of the two numbers cannot be 80 because it is not a factor of 120. The number which cannot be the HCF of two numbers whose LCM is 120 is c) 80.

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