List the multiples of each number

Oct 13, 2025 by wbrum.org 89 views

The concept of the Least Common Multiple (LCM) is a fundamental aspect of mathematics, particularly in the realm of number theory. In this article, we will delve into the world of LCMs and explore which pair of numbers has an LCM of 24.

What is the Least Common Multiple (LCM)?

The LCM of two numbers is the smallest number that is a multiple of both. It is the smallest number that can be divided evenly by both numbers. For example, the LCM of 6 and 8 is 24, because 24 is the smallest number that can be divided evenly by both 6 and 8.

Calculating the LCM

To calculate the LCM of two numbers, we can use the following steps:

List the multiples of each number: Write down the multiples of each number, starting from the number itself.
Identify the common multiples: Identify the multiples that are common to both numbers.
Select the smallest common multiple: Select the smallest common multiple as the LCM.

Applying the LCM Formula

There is a formula to calculate the LCM of two numbers:

LCM(a, b) = (a × b) / GCD(a, b)

where GCD(a, b) is the Greatest Common Divisor of a and b.

Evaluating the Options

Now that we have a good understanding of the LCM, let's evaluate the options:

A. 6 and 8

To calculate the LCM of 6 and 8, we can list the multiples of each number:

Multiples of 6: 6, 12, 18, 24, 30, ... Multiples of 8: 8, 16, 24, 32, 40, ...

The common multiples are 24, 48, 72, ... The smallest common multiple is 24.

B. 6 and 12

To calculate the LCM of 6 and 12, we can list the multiples of each number:

Multiples of 6: 6, 12, 18, 24, 30, ... Multiples of 12: 12, 24, 36, 48, 60, ...

The common multiples are 12, 24, 36, 48, 60, ... The smallest common multiple is 12.

C. 8 and 16

To calculate the LCM of 8 and 16, we can list the multiples of each number:

Multiples of 8: 8, 16, 24, 32, 40, ... Multiples of 16: 16, 32, 48, 64, 80, ...

The common multiples are 16, 32, 48, 64, 80, ... The smallest common multiple is 16.

D. 12 and 48

To calculate the LCM of 12 and 48, we can list the multiples of each number:

Multiples of 12: 12, 24, 36, 48, 60, ... Multiples of 48: 48, 96, 144, 192, 240, ...

The common multiples are 48, 96, 144, 192, 240, ... The smallest common multiple is 48.

Conclusion

Based on our calculations, we can see that the pair of numbers with an LCM of 24 is:

A. 6 and 8

The LCM of 6 and 8 is 24, because 24 is the smallest number that can be divided evenly by both 6 and 8.

Final Answer

In this article, we will address some of the most frequently asked questions about the Least Common Multiple (LCM).

Q: What is the LCM of two numbers?

A: The LCM of two numbers is the smallest number that is a multiple of both. It is the smallest number that can be divided evenly by both numbers.

Q: How do I calculate the LCM of two numbers?

A: To calculate the LCM of two numbers, you can use the following steps:

List the multiples of each number: Write down the multiples of each number, starting from the number itself.
Identify the common multiples: Identify the multiples that are common to both numbers.
Select the smallest common multiple: Select the smallest common multiple as the LCM.

Alternatively, you can use the formula:

LCM(a, b) = (a × b) / GCD(a, b)

where GCD(a, b) is the Greatest Common Divisor of a and b.

Q: What is the difference between LCM and GCD?

A: The LCM and GCD are two related but distinct concepts.

The GCD of two numbers is the largest number that divides both numbers evenly.
The LCM of two numbers is the smallest number that is a multiple of both.

Q: How do I find the LCM of a set of numbers?

A: To find the LCM of a set of numbers, you can use the following steps:

Find the LCM of the first two numbers: Use the method described above to find the LCM of the first two numbers.
Find the LCM of the result and the next number: Use the method described above to find the LCM of the result and the next number.
Repeat the process: Repeat the process until you have found the LCM of all the numbers.

Alternatively, you can use the formula:

LCM(a, b, c, ...) = LCM(LCM(a, b), c, ...)

Q: What is the LCM of 0 and any other number?

A: The LCM of 0 and any other number is undefined. This is because the LCM is defined as the smallest number that is a multiple of both numbers, and 0 is not a multiple of any number.

Q: What is the LCM of two prime numbers?

A: The LCM of two prime numbers is their product. This is because prime numbers have no common factors other than 1, so the LCM is simply the product of the two numbers.

Q: How do I use the LCM in real-world applications?

A: The LCM has many real-world applications, including:

Music: The LCM is used to find the lowest common denominator of two or more notes, which is useful in music theory.
Cooking: The LCM is used to find the largest number of ingredients that can be combined in a recipe.
Science: The LCM is used to find the smallest number of particles that can be combined to form a molecule.

Conclusion

In this article, we have addressed some of the most frequently asked questions about the Least Common Multiple (LCM). We have covered topics such as how to calculate the LCM, the difference between LCM and GCD, and how to use the LCM in real-world applications.

Final Answer

The final answer is that the LCM is a fundamental concept in mathematics that has many real-world applications.