Just 1.
The only common factor of 5, 9, and 18 is 1. The factors of 5 are 1 and 5 The factors of 9 are 1, 3, and 9 The factors of 18 are 1, 2, 3, 6, 9 and 18 The common factor is 1.
Common factors of 6, 9, and 36 are: 1 and 3.
5, 6, 8, and 9 share no common factors aside from 1.
The factors of 6 are: 1, 2, 3, 6 The factors of 9 are: 1, 3, 9 The factors of 15 are: 1, 3, 5, 15 The factors of 18 are: 1, 2, 3, 6, 9, 18 The common factors are: 1, 3
Factors of 45: 1, 3, 5, 9, 15, 45 Factors of 18: 1, 2, 3, 6, 9, 18 Common Factors: 1, 3, 9
They are 1 2 3 6 and 9
The factors of 6 are 1, 2, 3, and 6. The factors of 9 are 1, 3, and 9. The common factors of 6 and 9 are 1 and 3. Therefore, the least (smallest) common factor is 1.
The common factors of 6, 9, 27 and 18 are 1 and 3.
The factors of 45 are: 1, 3, 5, 9, 15, 45The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54The common factors are: 1, 3, 9
The factors of 18 are 1, 2, 3, 6, 9, and 18.The factors of 45 are 1, 3, 5, 9, 15, and 45.The common factors of 18 and 45 are 1, 3, and 9.
The common factors of 9, 18 and 27 are 1, 3, and 9.
The factors of 9 are: 1, 3, 9The factors of 18 are: 1, 2, 3, 6, 9, 18The factors of 45 are: 1, 3, 5, 9, 15, 45The common factors are: 1, 3, 9The Greatest Common Factor (GCF) is: 9