It is 10
The Greatest Common Factor of 80, 85, 90: 5
The HCF of 4 and 90 is 2.
The GCF is 5.
The GCF is 10.
The GCF is 18.
The GCF is 30.
HCF(160, 90) = 10.
The GCF is 16.
The GCF is 8.
Factors of 24: 1,2,3,4,6,8,12 and 24. Factors of 90: 1,2,3,5,9,10,18,30,45 and 90. The HCF (highest common factor) is 3.
The hcf is 15.