The HCF of both numbers is 1
1, 2.
1, 5, 25.
Some do and some don't.1, 5, 25, and their negatives, go into 25. No other numbers do.1, 2, 4, 7, 8, 14, 28, 56, and their negatives, go into 56. No other numbers do.The only number that goes into both 25 and 56 is ' 1 '.
The HCF of both numbers is 1
1 and 5.
70
One will go into both numbers evenly
644, 658, 672.
The highest common factor of both numbers is 1
The only common factor of 14 and 27 (number that cango into both of them evenly) is ' 1 '.
The hcf of both numbers is just 1