1 and 2
I am guessing you want common factors. That is to say factors common to 10 and 30 The common factors would be: 1,2, 5, and 10, but there only 4 that are common. 15 and 30 are factors of 30 so if you add those you have 6 factors.
The common factors are: 1, 2, 3, 5, 6, 10, 15, 30.
The common factors are: 1, 2, 3, 5, 6, 10, 15, 30
The common factors are: 1, 2, 3, 5, 6, 10, 15, 30
Common factors of 18 and 30 are: 1, 2, 3, and 6.
The common factors of 30 and 60 are 1, 2, 3, 5, 6, 10, 15 and 30.
The common factors of 1,020 and 30 are: 1, 2, 3, 5, 6, 10, 15, 30.
The common factors of 120 and 150 are 1, 2, 3, 5, 6, 10, 15 and 30
The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 For them to be common, they need to be compared to another set of factors.
The factors of 12 are: 1, 2, 3, 4, 6, 12.The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30.The common factors are: 1, 2, 3, 6
The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The common factors of 30 and 40 are 1, 2, 5, and 10, and the GCF is 10.
The factors 18 are 1, 2, 3, 6, 9, and 18. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The common factors of 18 and 30 are 1, 2, 3, and 6.