1 is a one-digit number that is a factor of both 8 and 9, but there is no one-digit number that has both 8 and 9 as factors.
20 and 30 All numbers have at least one common factor.
There is no "common factor" of 350, to have a common factor you must have more than one number, so there is no common factor of 350.
A common factor needs more than one number.
One.
if one number is odd 2 cannot be a common factor
6
Since the greatest 1-digit number is 9, the answer is 9 x 9 = 81.
20 and 30 All numbers have at least one common factor.
a common factor
There is no "common factor" of 350, to have a common factor you must have more than one number, so there is no common factor of 350.
A common factor needs more than one number.
There cannot be a common factor of just one number. To be common there need to be at least two numbers.
Answer: None, it is impossible. No single number has a greatest common factor. A "common factor" is a factor that two or more numbers have in common. The "greatest common factor" is the largest factor that two or more numbers have in common.
One.
"Common" means "same for both". There's no such thing as a "common" factor of only one number. There has to be two or more of them, then a "common" factor is a number that's a factor of all of them.
875 is one such number.
In order to have a "greatest common factor" you need to have more than one number, so that 175 has factor in common with another number.