Answer: GCF of 15 and 18 is 3.
What is the prime factorization of 15 and 18?
Solution
| Write each number as a product of primes. | 15=3⋅518=2⋅3⋅3 |
|---|---|
| Write each number as a product of primes, matching primes vertically when possible. | 15=3⋅518=2⋅3⋅3 |
| Bring down the primes in each column. | |
| Multiply the factors to get the LCM. | LCM = 2 • 3 • 3 • 5 The LCM of 15 and 18 is 90. |
What is the GCF for 18?
The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is 9.
What is the common multiples of 15 and 18?
To calculate the LCM of 15 and 18 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, 75, 90, . . . ) and 18 (18, 36, 54, 72, 90, . . . . ) Step 2: The common multiples from the multiples of 15 and 18 are 90, 180, . . .
What is the common factor of 15?
The factors of 15 are 1, 3, 5, and 15.
What is a common factor of 18 and 18?
The Pair Factors of 18 are (1, 18), (2, 9), and (3, 6) and its Prime Factors are 1, 2, 3, 6, 9, 18.
…
Sum of Factors of 18: 39.
| 1. | What Are the Factors of 18? |
|---|---|
| 2. | How to Calculate Factors of 18? |
| 3. | Factors of 18 in Pairs |
| 4. | Important Notes |
| 5. | FAQs on Factors of 18 |
What is the greatest common factor for 18 and 12?
In terms of numbers, the greatest common factor (gcf) is the largest natural number that exactly divides two or more given natural numbers. Example 1: 6 is the greatest common factor of 12 and 18.
What is the greatest common factor of 15 and 6?
Answer: GCF of 6 and 15 is 3.
How do you find the greatest common factor?
To find the GCF of a set of numbers, list all the factors of each number. The greatest factor appearing on every list is the GCF. For example, to find the GCF of 6 and 15, first list all the factors of each number. Because 3 is the greatest factor that appears on both lists, 3 is the GCF of 6 and 15.
What is the LCM and HCF of 18 and 15?
Example 1: Find the HCF of 15 and 18, if their LCM is 90. Therefore, the highest common factor of 15 and 18 is 3.
What is the LCM of 15 16 and 18?
The least common multiple of 15, 16 and 18 is 720.
What is the factor of 15 and 18?
The factors of 15 and 18 are 1, 3, 5, 15 and 1, 2, 3, 6, 9, 18 respectively. There are 3 commonly used methods to find the GCF of 15 and 18 – long division, prime factorization, and Euclidean algorithm.
Which number is a factor of 18?
The factors of 18 are 1, 2, 3, 6, 9 and 18.
What is the greatest common factor of 18 and 16?
Answer: GCF of 16 and 18 is 2.
What is the highest common factor of 15 and 20?
HCF of 15 and 20 by Prime Factorization
As visible, 15 and 20 have only one common prime factor i.e. 5. Hence, the HCF of 15 and 20 is 5.
How many factors does 15 have?
There are four factors of 15, i.e, 1, 3, 5 and 15.
What is the greatest common factor of 12 and 16?
The GCF of 12 and 16 is 4. To calculate the greatest common factor of 12 and 16, we need to factor each number (factors of 12 = 1, 2, 3, 4, 6, 12, factors of 16 = 1, 2, 4, 8, 16) and choose the greatest factor that exactly divides both 12 and 16, i.e., 4.
What is the greatest common factor of 15 and 10?
Answer: GCF of 10 and 15 is 5.
What is the greatest common factor of 15 and 12?
Answer: GCF of 12 and 15 is 3.
What is the greatest common factor of 14 and 18?
Answer: GCF of 18 and 14 is 2.
What is the greatest common factor of 18 and 6?
The GCF of 6 and 18 is 6. To calculate the greatest common factor (GCF) of 6 and 18, we need to factor each number (factors of 6 = 1, 2, 3, 6, factors of 18 = 1, 2, 3, 6, 9, 18) and choose the greatest factor that exactly divides both 6 and 18, i.e., 6.
What is the greatest common factor of 18 and 20?
The GCF of 18 and 20 is 2. To calculate the greatest common factor (GCF) of 18 and 20, we need to factor each number (factors of 18 = 1, 2, 3, 6, 9, 18, factors of 20 = 1, 2, 4, 5, 10, 20) and choose the greatest factor that exactly divides both 18 and 20, i.e., 2.
What is the greatest common factor of 18 and 4?
Answer: GCF of 4 and 18 is 2.
What is the greatest common factor of 18 and 9?
GCF of 9 and 18 by Listing Common Factors
There are 3 common factors of 9 and 18, that are 1, 3, and 9. Therefore, the greatest common factor of 9 and 18 is 9.
What is meant by greatest common factor?
The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4. The largest is 4, so we say that the GCF of 12, 20, and 24 is 4. GCF is often used to find common denominators.
What is the greatest common factor of 16 and 20?
Answer: GCF of 16 and 20 is 4.
What is the greatest common factor of 18 and 3?
The GCF of 3 and 18 is 3.
What is the least common multiple of 6 15 and 18?
Answer: LCM of 6, 15, and 18 is 90.
What is the least common factor of 15 and 25?
Answer: LCM of 15 and 25 is 75.
What are the multiples of 15?
and so on. Here is the list of all multiples: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375, 390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, 735, …
What is the LCM of 15 18 and 24?
Calculate the LCM
The least common multiple of 15, 18 and 24 is 360.
How do you find factors of 18?
Factors of 18 – YouTube
What are common factors of 12 and 18?
There are 4 common factors of 12 and 18, that are 1, 2, 3, and 6. Therefore, the greatest common factor of 12 and 18 is 6.
What the greatest common factor of 18 and 2?
As you can see when you list out the factors of each number, 2 is the greatest number that 2 and 18 divides into.
What is the greatest common factor of 15 and 9?
Answer: GCF of 9 and 15 is 3.
What is the greatest common factor of 18 and 36?
Answer: GCF of 18 and 36 is 18.