1 and 3
There cannot be common factors of just one number. To be common there need to be at least two numbers.
The factors of 63 are 1, 3, 7, 9, 21 and 63. For them to be common, they need to be compared to another set of factors.
factors of 567 = 3x3x3x3x7 factors of 441=3x3x7x7 so common factors among the two numbers are= 3x3x7 so the greatest common factor is =63
63 ... 3, 7, 9, 21, 63 36 ... 2, 3, 4, 6, 9, 12, 18, 36 common factors ... 3, 9
1.9091
To do this, the first step is to write the numbers as the product of their prime factors. In this case we have: 42 = 2x3x7 63 = 3x3x7 The next step is to identify common factors. In this case both numbers have a 3 and a 7 as factors. Take these numbers and multiply them together to find the HCF: 3x7 = 21 Thus the highest common factor of 42 and 63 is 21.
These numbers have almost no factors in common, therefore the Greatest Common Factor is 3
Common factors of 10 and 63 are: 1.
The HCF (Highest Common Factor) of 27, 63, and 207 can be found by identifying the common factors of these numbers. The factors of 27 are 1, 3, 9, and 27. The factors of 63 are 1, 3, 7, 9, 21, and 63. The factors of 207 are 1, 3, 9, 23, 69, and 207. The highest common factor among these numbers is 9.
LCM(a,b) = (ab)/(GCF(a,b)) 63 factors to [3 3 7] 15 factors to [3 5] common factors: [3] 63 * 15 / 3 = 315 ■
30 and 63 are relatively prime numbers. The factors of 30 are 1, 2, 3, 5, and 30, and the factors of 63 are 1, 7, 9, and 63. Two or more numbers are relatively prime if 1 is their only common factor.
The only common factor of all three numbers is 3. (The numbers 21 and 63 share all of the factors of 21 : 1, 3, 7, and 21.)