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Jamie Meadows
Mathematics
18 February, 12:27
What is the greatest common factor for 21,24,27
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Aleena Williamson
18 February, 12:29
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So,
To find the GCF, you have to factor all of the numbers.
21 - - > 3 * 7
24 - - > 2 * 2 * 2 * 3
27 - - > 3 * 3 * 3
Next, you find all the factors that they have in common.
They all have at least one 3, so that means that 3 is the greatest common factor of 21, 24, and 27.
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