The Greatest common factor of 12 and 28 is 4.
Greatest Common Factor (GCF): It is the highest common number that divides two or more numbers.
Factors of 12 is:
12 = 2×2×3
Factors of 28 is:
28 = 2×2×7
The number that is common to both 12 and 28 is 2×2, that is 4.
Hence, the greatest common factor of both 12 and 28 is 4.
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