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There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
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What is the highest common factor of 28 32?
To find the highest common factor of two numbers, you must first split them into their prime factors. In this case, the numbers 28 and 32 can split as follows: 28 = 2x2x7 32 = 2x2x2x2x2 The next step is to identify all common prime factors. In this case, the common prime factors are two 2s. To find the HCF, you just multiply these together: 2x2=4 Thus the highest common factor of 28 and 32 is 4.
What is the greatest common factors of 12 and 28?
The GCF of 12 and 28 is 4.One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 12 are 1, 2, 3, 4, 6, and 12.The factors of 28 are 1, 2, 4, 7, 14, and 28.The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 12 are 2, 2, and 3.The prime factors of 28 are 2, 2, and 7.The prime factors in common are 2 and 2, so the greatest common factor is 2 x 2 = 4.Factors of 12: 1 2 3 4 6 12Factors of 28: 1 2 4 7 14 28It is 44
What is the GCF of 28 and 42 by using prime factors?
2 x 2 x 7 = 28 2 x 3 x 7 = 42 The GCF is 2.
What is the greatest common factors of 28 84 and 91?
The GCF of 28, 84, and 91 is 7.
What are the factors and prime factors of 28 and 32?
The factors of 28 are: 1, 2, 4, 7, 14, and 28.The prime factors of 28 are: 2 and 7.The factors of 32 are: 1, 2, 4, 8, 16, and 32.The only prime factor of 32 is: 2.
Why is the gcf not easily recognized using prime factorization for 28 and 33?
Because 28 and 33 don't share any prime factors. In that case, the GCF is 1.
What is the gcf of 56 28 and 40 using prime factorization?
It is: 4
What is the GCF of 28 20 and 40?
To find the GCF, you first need to break the numbers down into their prime factors: 28 = 2x2x7 20 = 2x2x5 40 = 2x2x2x5 The next step is to find any common prime factors. In this case, all three numbers have two 2s as prime factors. Multiply these and you get 4. Therefore the GCF of 28, 20 and 40 is 4.
What is the Highest common factor of 28 and 68?
To find the greatest common factor (GCF), first find the prime factorization of the two numbers. The GCF is the product of all of the prime factors the two numbers have in common. Prime factors of 28: 2, 2, 7 Prime factors of 68: 2, 2, 17 They have in common: 2, 2. 2x2=4 The GCF is 4.
What is the prime factors using exponents for 28?
22 x 7 = 28
What is the highest common factor of 28 32?
To find the highest common factor of two numbers, you must first split them into their prime factors. In this case, the numbers 28 and 32 can split as follows: 28 = 2x2x7 32 = 2x2x2x2x2 The next step is to identify all common prime factors. In this case, the common prime factors are two 2s. To find the HCF, you just multiply these together: 2x2=4 Thus the highest common factor of 28 and 32 is 4.
What is the greatest common factor 28 and 75 using prime factorization?
prime factors of 28 are: 2, 2, 7.prime factors of 75 are: 3, 5, 5.As 28 and 75 have no common prime factors, their greatest common factor is 1.
What is the greatest common factor of 28 and32?
Prime factor each number. Circle all the prime common factors then, multiply them 28=2x2x7 32=2x2x2x2x2 GCF=2x2=4
What is the greatest common factors of 12 and 28?
The GCF of 12 and 28 is 4.One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 12 are 1, 2, 3, 4, 6, and 12.The factors of 28 are 1, 2, 4, 7, 14, and 28.The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 12 are 2, 2, and 3.The prime factors of 28 are 2, 2, and 7.The prime factors in common are 2 and 2, so the greatest common factor is 2 x 2 = 4.Factors of 12: 1 2 3 4 6 12Factors of 28: 1 2 4 7 14 28It is 44
What is the greatest common factor of 140 and 252?
To find the GCF of two numbers, you first need to break them down into their prime factors. For 140 and 252, these are: 140 = 2x2x5x7 252 = 2x2x3x3x7 The next step is to identify common prime factors. In this case, both numbers have two 2s and a 7 in their prime factors. To find the GCF, we simply multiply these common prime factors together: 2x2x7 = 28. Thus the greatest common factor of 140 and 252 is 28.
What is the gcf of 28 12 and 20?
To calculate the GCF you first have to split the numbers into their prime factors: 28 = 2x2x7 12 = 2x2x3 20 = 2x2x5 The next step is to identify any common factors. In this case, all three numbers have two 2s. Multiply these together and you get 4. Therefore the GCF of 28, 12 and 20 is 4.
What is the GCF of 28 and 42 by using prime factors?
2 x 2 x 7 = 28 2 x 3 x 7 = 42 The GCF is 2.
