The factors of 12 are 1, 2, 3, 4, 6, and 12
The factors of 18 are 1, 2, 3, 6, 9, and 18
The factors of 20 are 1, 2, 4, 5, 10, and 20
The common factors of 12, 18 and 20 are 1 and 2
The common factors of 12 and 18 are 1, 2, 3, and 6
The common factors of 12 and 20 are 1, 2, and 4
The common factors of 18 and 20 are 1 and 2
The total number of factors for 12, 18 and 20 are all the same (6).
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The mode of 18, 20, 15, 12, and 20 is 20. The mode is 20 because that number is the most common in the set.
"12" has 6 factors.
The factors of 10 are: 1, 2, 5, 10 The factors of 11 are: 1, 11 The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 13 are: 1, 13 The factors of 15 are: 1, 3, 5, 15 The factors of 16 are: 1, 2, 4, 8, 16 The factors of 17 are: 1, 17 The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 19 are: 1, 19 The factors of 20 are: 1, 2, 4, 5, 10, 20
8 and 12 are factors of 20, 8 + 12 = 20