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You need at least two whole numbers to find a GCF, not one decimal.
If that's 5 and 6, the GCF is 1.
It is: 8
The GCF is 14.
42=2x3x7 56=23x7 so the HCF = 2x7 = 14
They are 8 and 2520 respectively
The GCF is 28.
The GCF is 4.
The GCF is 7
The HCF is: 2
HCF(56, 98, 168) = 14
The HCF of 56 and 21 is 7
8
4