Factor out each term to obtain:
27 = 3 x 9
= 3 x 3²
= 3³
30 = 3 x 10
= 3 x 2 x 5
= 2 x 3 x 5
28 = 4 x 7
= 2² x 7
Since all of these terms don't have the common factor, it must be 1!
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Common factors of 27 and 30 are: 1 and 3.
The Least Common Multiple (LCM) for 27 28 30 is 3,780.
The common factors of 27 and 30 are 1, 3, and 9.
Common factors of 28 and 30 are: 1 and 2.
The common factors are: 1, 2
1 and 3 are common factors of 27 and 30.
3
1 and 3
The highest common factor is 3
No, the only common factors are 1 and 3.
The factors of: 27: 1, 3, 9, 27 35: 1, 5, 7, 35 30: 1, 2, 3, 5, 6, 10, 15, 30 Common factors: cf(27, 35): 1 cf(27, 30): 1, 3 cf(35, 30): 1, 5 cf(27, 35, 30): 1 27 = 3^3 35 = 5 x 7 30 = 2 x 3 x 5 The common factors are the factors of their highest common factor: hcf(27, 35) = 1 → cf(27, 35): 1 hcf(27, 30) = 3 → cf(26, 30): 1, 3 hcf(35, 30) = 5 → cf(35, 30): 1, 5 hcf(27, 35, 30) = 1 → cf(27, 35, 30): 1
There's no common multiples besides 1.