One.
1,2,4 EVENLY
It is: 1
HCF(9, 12) = 3
12 divided by 2 = 6
2 AND 4
1, 2.
Nothing. because 5 goes into 25 but not into 12. 2 goes into 12 but not 25.--------------------------------------------------------------------------------------------------------------------
1, 2, 3, 4, 6, 12.
Not evenly.