It is 1 but the HCF is 21
21 and 126, respectively.
The Greatest Common Factor of 28, 42, 63: 7
The LCM of 42 and 63 is 126
The highest common factor is 21
The least common multiple of 21, 42, 63, and 105 is 630.
3The GCF is: 2121.The GCF is 21.
Answer: 7.
21
21
It is 21
The GCF is 21.
The gcf is 21