1 and 7
7
1 and 7
It is 7
42 & 49 !
To find the greatest common factor of 21, 42, and 49, we first need to find the prime factors of each number. The prime factors of 21 are 3 and 7, the prime factors of 42 are 2, 3, and 7, and the prime factors of 49 are 7 and 7. The greatest common factor is the product of the common prime factors raised to the lowest power they appear in any of the numbers, which in this case is 7. Therefore, the greatest common factor of 21, 42, and 49 is 7.
Factors of 42: 1, 2, 3, 6, 7, 14, 21, and 42. Factors of 49: 1, 7, and 49.
The greatest common factor (GCF) of 35, 42, and 49 is 7. To find the GCF, you need to determine the factors of each number and then identify the largest factor that is common to all three numbers. In this case, the factors of 35 are 1, 5, 7, 35; the factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42; and the factors of 49 are 1, 7, 49. The largest factor that is common to all three numbers is 7, making it the greatest common factor.
One way to approach this is to look at the difference between 42 and 49, which is 7. The greatest common factor of two numbers cannot be larger than the difference between the two numbers and must be a factor of the difference. Since both 42 and 49 are divisible by 7, the greatest common factor is 7. Another way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 49 are 1, 7, and 49. The common factors are 1 and 7. Therefore, the greatest common factor is 7. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 42 are 2, 3, and 7. The prime factors of 49 are 7 and 7. The prime factors in common are a single 7, so the greatest common factor is 7
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 49 are: 1, 7, 49
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 98 are: 1, 2, 7, 14, 49, 98 The common factors are: 1, 2, 7, 14
The common factors are: 1, 2.
Factors for 147: 1, 3, 7, 21, 49, 147 Factors for 294: 1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294 Common Factors: 1, 3, 7, 21, 49, 147