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Q: What are the common factor of 3 5 7?

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There is only one common factor of 5, 3, 7: 1

3, 5, and 7 are all prime numbers so their greatest common factor is 1.

735/3=245/7=35/7=5 2625/3=875/7=125/5=25/5=5 ring the factors in common which are 3*7*5 =105 highest common factor

Factor out each term to get: 77 = 7 x 11 105 = 5 x 21 = 5 x 3 x 7 = 3 x 5 x 7 Since these terms have 7 in common, 7 is the common factor.

The Greatest Common Factor (GCF) of 5, 7, and 3 is 1.

25 = 5*5 35 = 5*7 45 = 3*3*5 So the greatest common factor is 5.

140

Just 1.

The greatest common factor of 3 and 7 is 1.

5 35/5=7 15/5=3 3 and 7 are prime numbers

The prime factors are: 15 = 3 * 5 35 = 5 * 7 75 = 3 * 5 * 5 So the greatest common factor is 5.

The prime factors of 180a2 are 2, 2, 3, 3, 5, a, and a. The prime factors of 210a are 2, 3, 5, 7, and a. The prime factors in common are 2, 3, 5, and a, so the greatest common factor is 2 x 3 x 5 x a = 30a. If a is divisible by 7, there would be two factors of 7 in a2, so the extra 7 would be another factor in common with 210a, in which case the greatest common factor would be 7 x 30a = 210a

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