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20 = 2 x 2 x 5
30 = 2 x 3 x 5
Common prime factors: 2 and 5.
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∙ 13y ago
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What are HCF of 20 and 30?
To find the HCF of 20 and 30, break them down into their prime factors: 20 = 2x2x5 30 = 2x3x5 The next step is to identify any common prime factors. In this case both numbers have a 2 and a 5 as prime factors. Multiply these together and you get: 2x5 = 10 Therefore the HCF of 20 and 30 is 10.
What is the common factors for 30 and 45?
The factors of 30 are 1, 2, 3, 5, 6, 10, 20, and 30. The factors of 45 are 1, 3, 5, 9 15, and 45. The common factors of 30 and 45 are 1, 3, and 5.
What is the greatest common factor for 45 and 60?
The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15. You can also determine the greatest common factor from the prime factors. The prime factors of 45 are 3, 3, and 5. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 3 and 5, so the greatest common factor is 3 x 5 = 15.
What are common factors of 30 and 40?
The common factors of 30 and 40 are 1, 2, 5, 10
Is 1 the greatest common factor of 42 and 90?
No, it is 6. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90. The common factors are 1, 2, 3, and 6, so the greatest common factor is 6. You can also determine this by looking at the prime factors. The prime factors of 42 are 2, 3, and 7. The prime factors of 90 are 2, 3, 3, and 5. The prime factors they have in common are 2 and 3, so the greatest common factor is 2 x 3 = 6.
What are HCF of 20 and 30?
To find the HCF of 20 and 30, break them down into their prime factors: 20 = 2x2x5 30 = 2x3x5 The next step is to identify any common prime factors. In this case both numbers have a 2 and a 5 as prime factors. Multiply these together and you get: 2x5 = 10 Therefore the HCF of 20 and 30 is 10.
What are the prime factors of 20 and 30 no factor is repeated?
The prime factors of 20 are 2 and 5. The prime factors of 30 are 2, 3 and 5.
What are the common prime factors of 30 and 24?
The common prime factors are 2 and 3.
How is the largest factor that 12 and 30 have in common related to the prime factors the two have in common?
The largest factor that 12 and 30 have in common is the product of the two prime factors they have in common.
What are the common factors of 30?
1,30 2,15 3,10 5,6 Common factors are factors that two or more numbers have in common. A single number cannot have common factors. A single number can have factors, prime factors, and proper factors. The factors of 30 are listed above. The prime factors of 30 are 2, 3, and 5.
What pair of numbers is 30 and 18 a common prime factor?
The common prime factors of 18 and 30 are 2 and 3.
What are all the factors of 30 which are also the factors of 20?
The common factors of 20 and 30 are 1, 2, 5, and 10.
What prime factors do 42 and 30 have in common?
2 and 3
What are the prime common factors of 30 and 135?
3 and 5
What are the common prime factors of 18 and 30?
2 and 3.
What is the greatest common factor of 30 and 1224?
The greatest common factor can be calculated by identifying the common prime factors and multiplying them together. The prime factors of 30 are 2, 3, and 5. The prime factors 1224 are 2, 2, 2, 3, 3, and 17. The prime factors in common are 2 and 3, so the greatest common factor is 2 x 3 = 6.
Is 12 and 30 relatively prime?
12 and 30 are not relatively prime because they have two common prime factors (2 and 3).
