Find the greatest common factor of 210, 84, and 56

Question

Marlon Mullins

Mathematics

10 May, 03:29

Find the greatest common factor of 210, 84, and 56

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Answers (2)

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Micaela Stein · Answer 1

To get the Greates Common Factor (GCF) of 84 and 210 we need to factor each value first and then we choose all the copies of factors and multiply them:

84: 223 7 210: 2 357 GCF: 2 3 7

The Greates Common Factor (GCF) is: 2 x 3 x 7 = 42

Madelyn Harvey · Answer 2

Write the prime factors:-

56 = 2*2*2*7

84 = 2*2*3*7

210 = 2*3*5*7

Pick out the numbers common to all three factors;

They are 2 and 7.

So the GCF = 2*7 = 14 answer