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1st of all they are numbers. They are composite numbers. (if your wondering what composite numbers are they are numbers that can be divided by numbers other than one and its self.) And I hope that helps with your question!

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โˆ™ 2010-01-25 04:42:04
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Q: What do the numbers 28 6 78 21 105 have in common?
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What are the common factors of 84 and 105?

The common factors of 84 and 105 are: 1, 3, 7, and 21The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105.The common factors are: 1, 3, 7, 21


What is the greatest common factor of 28 and 105?

The GCF of 28 and 105 is 7.


What are the common factors of 21 and 28?

Factors are numbers you can multiply together to get another number.21: 1, 3, 7, 2128: 1, 2, 4, 7, 14, 28The common factors of 21 and 28 are 1 and 7.1 and 7


What is the least common multiple of 21 and 28?

The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63, 84 28: 28, 56, 84 The LCM of 21 and 28 is 84.


What are the factors of 84 and 105?

Factors for 84 are {1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84} Factors for 105 are {1, 3, 5, 7, 15, 21, 35, 105} Greatest common factor of 84 and 105 is 21


What is the GCF of 84 and 105?

The factors of 84 are:1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84The factors of 105 are:1, 3, 5, 7, 15, 21, 35, 105The common factors are:1, 3, 7, 21The Greatest Common Factor (GCF) is:21


What is 21 over 28 simplified?

both numbers have a common factor of 7 divide each by 7: 21/28 = 3/4


What are all the common factors of 84 and 105 and the GCF of each pair?

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21


What is the greatest common factor of 2849 and 105?

what is the greatest common factor of 28 49 and 105


What are the numbers between 15 and 30 that have 7 as their greatest common factor?

21 and 28.


What are the common factors of 28 and 21?

The common factors of 28 and 21 are: 1 and 7


What are two pairs of numbers that have 7 as their greatest common factor?

7 and 14 21 and 28


What is the greatest common factor of 21 and 28?

The GCF of 21 and 28 is 7.One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 21 are 1, 3, 7, and 21.The factors of 28 are 1, 2, 4, 7, 14, and 28.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 21 are 3 and 7.The prime factors of 28 are 2, 2, and 7.The prime factors in common are a single 7, so the greatest common factor is 7.77There is neither a greatest common factor nor common factors of a single number, such as 2821, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor.


What numbers between 20 and 30 have a greatest common factor of 7?

21 and 28 have a GCF of 7.


What is a common factor of two numbers between 20 and 30 is 7?

21 and 28 have 7 as a factor.


How many times can 5 go into 105?

21


What is the greatest common factor of 21?

You need at least two numbers to find a GCF.For example:The GCF of 21 and 9 = 3The GCF of 21 and 28 = 7


What is the LCM of 28 and 21?

The least common multiple of 28 and 21 is 84


What is the greatest common factor of 15 21 and 28?

The Greatest Common Factor of 15, 21, 28: 1


Common factors of 42 and 28?

Factors are numbers you can multiply together to get another number. Common factors are the factors two or more numbers have in common. 28: 1, 2, 4, 7, 14, 28 42: 1, 2, 3, 6, 7, 14, 21, 42 The common factors of 28 and 42 are 1, 2, 7 and 14.


What are two numbers with a greatest common factor and a least common multiple of 28?

28 and 28


What is the least common multiple of 28 14 21?

The Least Common Multiple (LCM) for 28 14 21 is 84.


What is the least common multiple of 28 and 14 and 21?

The Least Common Multiple (LCM) for 28 14 21 is 84.


What is the least common multiple of 21 and 28 and 7?

The Least Common Multiple (LCM) for 21 28 7 is 84.


What is the least common multiple of 28 21 56?

The Least Common Multiple (LCM) for 28 21 56 is 168.