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Answer: 1. One way to determine the greatest common factor is to find all the factors of the numbers and compare them.
The factors of 25 are 1, 5, and 25.
The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.
The only common factor is 1. Therefore, the greatest common factor is 1, which means the numbers are relatively prime.
The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.
The prime factors of 25 are 5 and 5.
The prime factors of 42 are 2, 3, and 7.
There are no prime factors in common, so the numbers are relatively prime, which means the greatest common factor is 1.
Another way to approach this is to look at the difference between 25 and 42, which is 17. 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 between the numbers. Since 17 is a Prime number, the greatest common factor must be either 1 or 17. Neither 25 nor 42 are divisible by 17, so the greatest common factor is 1. This is a useful shortcut if you notice that the difference between the two numbers is a prime number.
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What is the greatest common factor of 42 56and 98?
The Greatest Common Factor of 42, 56, 98: 14
What is the least common multiple and the greatest common factor of 42 70 and 84?
The Least Common Multiple (LCM) for 42 70 84 is 420.The Greatest Common Factor (GCF) for 42 70 84 is 14.
What is the greatest common factor shared by 42 and 20?
2
Find the greatest common factor of 9 42 45?
The GCF is 3.
What is the greatest common factor of 42 and 70?
The greatest common factor (GCF) of 42 and 70 is the largest number that divides evenly into both 42 and 70. To find the GCF, we first list the factors of each number: 42 (1, 2, 3, 6, 7, 14, 21, 42) and 70 (1, 2, 5, 7, 10, 14, 35, 70). The largest number that appears in both lists is 14, so the GCF of 42 and 70 is 14.
