the lcf is 105
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The least common factor of 3 and 12 is 3 though in reality, the least common factor between any two numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of integers is 1.
The least common factor of any set of numbers is 1.
You need at least two numbers to find something in common. If that's 12 and 15, the answer is 3.