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It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
The GCF is 9.
HCF is 18
2
3
hcf(18, 30) = 6.
HCF = 3... LCM = 18 !
The GCF is 18.
The GCF is 3.
6 is the HCF of 18 & 48
The GCF is 6.
The HCF is 18
The hcf is 12
18