3 years ago

What is the greatest common factor of 21, 27, and 39?

Mathematics

2 answers:

egoroff_w [7]3 years ago

4 0

21 = 1*21, 3*7
27 = 1*27, 3*9
39 = 1*39, 3*13,

From here can you see any common factors?

Tanzania [10]3 years ago

3 0

21 = 3 x 7
27 = 3³
39 = 3 x 13

Greatest Common Factor = 3

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Answer: 3
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