Answer: 1 The factors of 9 are 1, 3, and 9. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3; the least (smallest) common factor is 1.
The factors of 3 are 1 and 3. The factors of 5 are 1 and 5. The factors of 6 are 1, 2, 3, and 6. The factors they have in common are only 1, so the least (or lowest) common factor is 1. Note: The least common factor of two or more positive integers will always be 1.
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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 factors of 3 are 1 and 3.The factors of 4 are 1, 2, and 4.The factors of 5 are 1 and 5.The only common factor of 3, 4, and 5 is 1. The least common factor is 1.
The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.
Most of the time, math questions are about the greatest common factor or the least common multiple, not the least common factor. The least common factor of any two numbers would typically be 1. The factors of 15 are 1, 3, 5, and 15. The factors of 9 are 1, 3, and 9. The greatest common factor is 3. The prime factors of 15 are 3 and 5. The prime factors of 9 are 3 and 3. So, take the 3 and 5 prime factors of 15, and then the second 3 prime factor of 9, multiply them together, so 3 x 5 x 3 = 45 is the least common multiple.
The least common factor of any numbers is typically 1. The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 81 are 1, 3, 9, 27, and 81. The common factors are 1, 3, and 9. The least (smallest) common factor is 1.
The factors of 3 are 1 and 3. The factors of 8 are 1, 2, 4, and 8. The only common factor is 1. Therefore, the least (smallest) common factor is 1.
Common factors of 60 and 135 are: 1, 3, 5, and 15.
The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. The factors of 33 are 1, 3, 11, and 33. The common factors are 1 and 3. The least (smallest) common factor is 1. The smallest common prime factor is 3.
The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 27 are 1, 3, 9, and 27. The common factors of 12 and 27 are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.