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225 = 3252 63 = 327 so the greatest common factor is 9
To find the highest common factor (HCF) of 225 and 270, we first need to find the factors of each number. The factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, and 225. The factors of 270 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, and 270. The highest common factor of 225 and 270 is 45, as it is the largest factor that both numbers share.
The greatest or highest common factor is the highest number that divides exactly into two or more numbers. 20: 1, 2, 4, 5, 10, 20 45: 1, 3, 5, 9, 15, 45 The greatest common factor for 20 and 45 is 5.
The Greatest Common Factor of 9, 18, 21: 3
The factors of 45 are: 1, 3, 5, 9, 15, 45The factors of 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72The common factors are: 1, 3, 9The Greatest Common Factor (GCF) is: 9