Solution: We know that all the factors of 45 are 1, 3, 5, 9, 15, and 45. A prime number that is not a composite number is a prime factor. Prime factorization of 45 = 1 × 3 × 3 × 5.
What are the common multiples of 45 and 15?
To calculate the LCM of 15 and 45 by listing out the common multiples, we can follow the given below steps:
- Step 1: List a few multiples of 15 (15, 30, 45, 60, . . . ) and 45 (45, 90, 135, 180, 225, 270, 315, . . . . )
- Step 2: The common multiples from the multiples of 15 and 45 are 45, 90, . . .
Are the common factors of 15?
The factors of 15 are 1, 3, 5, and 15.
What is the difference of LCM and GCF of 15 and 45?
Multiples of 45: 45, 90, 135, 180, 225, 270, etc. The least multiple on the two lists that they have in common is the LCM of 15 and 45. Therefore, the LCM of 15 and 45 is 45. In summary, the answer to the question “What is the LCM and GCF of 15 and 45?” is 45 and 15.
What are the common factors of 18 and 15?
There are 2 common factors of 15 and 18, that are 1 and 3. Therefore, the greatest common factor of 15 and 18 is 3.
How to find the GCF of 15 and 45?
The first step to find the gcf of 15 and 45 is to list the factors of each number. The factors of 15 are 1, 3, 5 and 15. The factors of 45 are 1, 3, 5, 9, 15 and 45. So, the Greatest Common Factor for these numbers is 15 because it divides all them without a remainder.
What are the common factors of 15, 45 and 90?
The common factor of 15, 45 and 90 is 15. (GCF) The GCF of 15, 45 and 90 is 15. If you just talk about all the CF of 15, 45 and 90 then the CF’s are 1, 3, 5 and 15. Hope this helps! Break down each number into its prime factors.
Which is the greatest common factor of 45?
The factors of 45 are 1, 3, 5, 9, 15 and 45. So, the Greatest Common Factor for these numbers is 15 because it divides all them without a remainder. Read more about Common Factors below.
What are the common factors of 15 and 5?
The common factors of 15 and 5 are 1 and 5 since the factors of 15 are 1, 3, 5, 15, whereas the factors of 5 are 1, 5. What are the common factors of 15 and 25?
