No. Consider 18.
is six a multiple of twelve?
Nope... 12 is a factor of itself - but not a factor of six.
Twelve
Six is a factor of 66.
Since 12 is a factor or 36, it is automatically the GCF.
Three is not a multiple of six. Six is a multiple of three. And three is a factor of six.
12
No. 6 is a factor of 36. 36 is a multiple of 6.
No, one is a factor of six, not a multiple. You cannot say one when you are counting by six.
Yes - 2 x 6 = 12.
60
No, it's six. 12 is not a factor of thirty.