The least common factor of any set of positive integers is 1.
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The GCF is 2. The least common factor of any set of positive integers is 1.
Multiples of 6: 6, 12, 18, 24, 30, 36, ................ Multiples of 10: 10, 20, 30, 40, ................ 30 is the LCM (least common multiple) of 6 and 10. correct but LCM stands for lowest common multiple...
Using prime factorisation: 12 = 2² x 3 15 = 3 x 5 →hcf = 3 →lcm = 2² x 3 x 5 = 60
There cannot be a lowest common factor of just one number. To be common there need to be at least two numbers.