1, 3, 7, and 21
The GCF is 21.
The factors of 105 are 3,5, & 7. The factors of 63 are 3,3, & 7. One lot of '3' and one lot of '7' is common to both numbers. Hence 3 x 7 = 21 , which is the HCF of 105,& 63.
1, 3, 7, 21
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 63 are: 1, 3, 7, 9, 21, 63 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 63 are: 1, 3, 7, 9, 21, 63 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21
The factors of 63 are: 1, 3, 7, 9, 21, 63 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105
Well, well, well, look at you trying to flex your math muscles. The greatest common factor of 21, 63, and 105 is 21. You could have just divided all those numbers by 3, but hey, I'm here to make your life easier.
A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 63 are 1, 3, 7, 9, 21, and 63.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The common factors are 1, 3, 7 and 21. Therefore, the greatest common factor is 21.The GCF is 21.
1, 3, 7 and 21
Factors of 63: 1, 3, 7, 9, 21, 63.Factors of 105: 1, 3, 5, 7, 15, 21, 35, 105.Factors of 294: 1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294.GCF (63, 105, 294) = 21The GCF is 21.
The least common multiple of 21, 42, 63, and 105 is 630.
The Greatest Common Divisor/Denominator is 21