Yes.
First find the HCF of two of the numbers, then find the HCF of that answer and the third number.
In this way you could find the HCF of as many numbers as you want.
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Get the greatest factor of two of the numbers, then get the greatest factor of the result with the third number.
Two or more numbers are needed to find their LCM
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself. So you do not need to use the division ladder or any other method!
(7 - 2)/0.5 = 10 Neither 2 nor 0.5 are odd numbers, but 10 is even.
1, 5, 7 and 35
The GCF is 3.