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Q: How can you find the GCF of a given set of numbers given their LCM but without listing the factors of the numbers?

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If you have two numbers, multiply them together and divide that total by the GCF. The result will be the LCM.

LCM is 40, which is the multiple of the highest power of prime factors in the given numbers (23 x 5).

There is not enough information to answer this question. Common factors are factors that two or more numbers have in common. Without being given at least two numbers, it is impossible to list all the common factors.

21 has the most factors of the given numbers.

The GCF of the given numbers is 8

The HCF of the given numbers is 27

They are 8 and 16 which are multiples of the given numbers

The HCF of the given two numbers is 7

All numbers have factors. Some factors are prime numbers. These are known as prime factors. The set of prime factors is a subset of the set of factors for any given number.

Without knowing what the numbers are, I would suggest taking the mean of the given numbers.

No, the product of two factors that are the same is a perfect square. Common factors are numbers that divide evenly into a given set of numbers.

Prime numbers between the given numbers are 23 and 29

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