7
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The GCF is 14.
84 and 14, respectively.
To calculate the Highest Common Factor (HCF) of 28, 14, and 21, we first find the factors of each number: Factors of 28 are 1, 2, 4, 7, 14, and 28. Factors of 14 are 1, 2, 7, and 14. Factors of 21 are 1, 3, 7, and 21. The common factors among all three numbers are 1 and 7. Therefore, the HCF of 28, 14, and 21 is 7.
HCF(98, 182) = 14.
The greatest (highest) common factor of 28 and 42 is 14.The GCF is 14.