The factors of 42 are:
1, 2, 3, 6, 7, 14, 21, 42
The factors of 105 are:
1, 3, 5, 7, 15, 21, 35, 105
The only common factor of 42 112 105 is 7.
1,2,3,6,7,14,21,42 1,2,3,4,6,12 1,3,5,7,15,21,35,105
The GCF is 7.
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
42 prime factors -----> 2,3,7 105 prime factors -----> 3,5,7 There is 3 and 7 in common : There fore 3*7 = 21; 21 is the greatest common factor.
Factors for 84 are {1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84} Factors for 105 are {1, 3, 5, 7, 15, 21, 35, 105} Greatest common factor of 84 and 105 is 21
The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105
The greatest common factor is seven.
The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105
105
LCM of 42 and 105 is 210.