Q. Find the greatest common factor of 75,8 , and 21 .
Factors of 75: List the factors of 75.1×75=753×25=755×15=75Factors of 75: 1, 3, 5, 15, 25, 75
Factors of 8: List the factors of 8.1×8=82×4=8Factors of 8: 1, 2, 4, 8
Factors of 21: List the factors of 21.1×21=213×7=21Factors of 21: 1, 3, 7, 21
Common Factors of 75, 8, and 21: Identify the common factors of 75, 8, and 21.Factors of 75: 1, 3, 5, 15, 25, 75Factors of 8: 1, 82, 83, 8Factors of 21: 1, 3, 88, 21The only common factor among 75, 8, and 21 is 1.
Greatest Common Factor (GCF) of 75, 8, and 21: Determine the greatest common factor (GCF) of 75, 8, and 21.Since the only common factor is 1, the GCF of 75, 8, and 21 is 1.
More problems from Greatest common factor of three or four numbers