What is the sum of the greatest common factor of 3 and 6 and the least common multiple of 3 and 6?
To find the greatest common factor of 3 and 6, I need to think of the factors of both numbers and find the largest one they have in common. The factors of 3 are 1 and 3, and the factors of 6 are 1, 2, 3, and 6. The largest factor they have in common is 3, so the greatest common factor of 3 and 6 is 3. To find the least common multiple of 3 and 6, I need to think of the multiples of both numbers and find the smallest one they have in common. The multiples of 3 are 3, 6, 9, 12, and so on, and the multiples of 6 are 6, 12, 18, and so on. The smallest multiple they have in common is 6, so the least common multiple of 3 and 6 is 6. Now I just need to add the greatest common factor and the least common multiple. 3 + 6 = 9 