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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 else can I help you with?
What is th gcf of 40 and 60?
The GCF is 20.
What is the greatest common factor of 20 40 and 75?
The GCF is 5.
What is the GCF of 40 and 100?
The Greatest Common Factor of 40 and 100 is 20. 5x2x2. Use a factor tree and learn math!!!!!!!!!!!!!!
What is the greatest common factor of 24 40 and 60?
GCF(24, 40, 60) = 4
What is the greatest common factor of 40 60 and 180?
The GCF is 20.
What is the GCF of 40 and 28?
The GCF is 4.
What is the greatest common factor of 20 28 40?
The GCF is 4.
What is the GCF of 40 and 20?
Since 20 is a factor of 40, it is automatically the GCF of this problem.
What is the GCF of 40 and 180?
The GCF is 20.
What is the GCF of 40 60?
The GCF is 20.
What is the GCF of 40 and100?
The GCF is 20.
What is the greatest common factor of 20 an 40?
Since 20 is a factor of 40, it is automatically the GCF.
What is the answer of 20 and 40 is it LCM or GCF?
The LCM and GCF of 40 and 20 are 40 and 20 respectively.
What is the gcf pf 20 and 28?
The GCF of 20 and 28 is 4
What is the GCF of 20 40?
The GCF is: 20
What is the Gcf of 20 35 and 40?
The GCF is 5.
What is the GCF of 28 40?
The GCF is 4.
