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The GCF of 49 and 55 is 1.

The prime factorization of 49 is 7*7.
The prime factorization of 55 is 5*11
They have no common factors other than 1, so they are coprime and their GCF is 1.

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7y ago
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12y ago

There is no answer to the question.

For, if X was the greatest common multiple, then 2X would also be a common multiple and would clearly be greater. And then, if 2X were the greatest common multiple, 4X would be a common multiple and greater still. And so on ...

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14y ago

42 = 2 x 3 x 7; 55 = 5 x 11; Greatest common factor is 1

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7y ago

The greatest common multiple of any set of integers is infinite.

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8y ago

The GCF is 11.

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7y ago

The GCF is 1.

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9y ago

The GCF of 55 and 77 is 11.

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13y ago

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14y ago

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Q: What is the greatest common multiple of 42 and 55?
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Answer:The greatest common factor of 42 and 55 is 1.The common factors of 42 and 55 are only 1.Definition: A factor is a divisor - a number that will evenly divide into another number. The common factors of two or more numbers are all the factors that the numbers have in common. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Methods:One way to determine the common factors and 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 55 are 1, 5, 11, and 55.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 42 are 2, 3, and 7.The prime factors of 55 are 5 and 11.There are no prime factors in common, so the numbers are relatively prime, which means the greatest common factor is 1.


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