Since 12 is a factor of 84, all of its factors are common.
The GCF of 132 and 198 is 66. The factors of 132 are 2x66=2x2x3x11, The factors of 198 are 198= 3x66=2x11x3x3 The GCF is 66.
The common factors are: 1, 7
The common factors are: 1, 2.
The GCF of 28 and 84 is 28.
The common factors of 28 and 84 are 1,2,4,7,14 and 28
The common factors of 28 and 84 are 1,2,4,7,14 and 28.
Common factors of 15 and 84 are: 1 and 3.
The common factors are:1, 2, 11, 22
Since 12 is a factor of 84, all of its factors are common.
The common factors of 21 42 and 84 are 21
Since 21 is a factor of 84, all of its factors are common.
The factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84. To find a greatest common factor, you need to compare them to another number's factors.
198 factors to [2 3 3 11] 36 factors to [2 2 3 3] Common factors are [2 3 3] = 18 198 * 36 / 18 = 396
The common factors of 63 and 84 are: 1, 3, 7, and 21
The common factors of 78 and 84 are 1, 2, 3 and 6.
The GCF of 132 and 198 is 66. The factors of 132 are 2x66=2x2x3x11, The factors of 198 are 198= 3x66=2x11x3x3 The GCF is 66.