# What is the Least Common Multiple of 10 and 15?

Learn how to find the least common multiple of 10 and 15 in this comprehensive guide. Explore the concept of LCM and how to calculate it step-by-step.

## Introduction

Mathematics is an essential part of our daily lives, and we encounter it in various forms everywhere we go. One of the critical concepts of mathematics is the Least Common Multiple (LCM), which is used in many real-life situations. In this article, we will explore what the least common multiple is and how to find it. Specifically, we will focus on finding the least common multiple of two numbers, 10 and 15.

## Definition of Least Common Multiple

The Least Common Multiple (LCM) is the smallest multiple that two or more numbers have in common. In other words, it is the lowest number that is divisible by each of the numbers in question without leaving any remainder. The LCM is used in various mathematical operations, such as adding and subtracting fractions with different denominators, as well as finding the time for two events to occur simultaneously.

To find the LCM of two or more numbers, you need to identify the common factors and multiples of the numbers in question. The LCM is then the product of the common factors and the highest power of each factor that appears in any of the numbers.

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## Factors of 10 and 15

Factors are numbers that divide a given number without leaving any remainder. The factors of 10 are 1, 2, 5, and 10, while the factors of 15 are 1, 3, 5, and 15. To find the common factors of 10 and 15, we need to identify the factors that they have in common. Both 10 and 15 have the factors 1 and 5 in common. Therefore, the common factors of 10 and 15 are 1 and 5.

## Multiples of 10 and 15

Multiples are numbers that are obtained by multiplying a given number by another integer. The multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, and so on, while the multiples of 15 are 15, 30, 45, 60, 75, 90, and so on. To find the common multiples of 10 and 15, we need to identify the multiples that they have in common. The common multiples of 10 and 15 are 30, 60, 90, and so on.

To find the least common multiple of 10 and 15, we need to identify the smallest multiple that they have in common. In this case, the least common multiple of 10 and 15 is 30. 30 is the smallest multiple that both 10 and 15 have in common. Therefore, the LCM of 10 and 15 is 30.

## Calculation of LCM of 10 and 15

To calculate the LCM of 10 and 15, we can use the prime factorization method. The prime factors of 10 are 2 and 5, while the prime factors of 15 are 3 and 5. To find the LCM, we need to take the highest power of each prime factor that appears in any of the numbers.

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The highest power of 2 that appears in any of the numbers is 2^1, while the highest power of 3 that appears in any of the numbers is 3^1. The highest power of 5 that appears in any of the numbers is 5^1. Therefore, the LCM of 10 and 15 is 2^1 x 3^1 x 5^1 = 30.

In conclusion, the least common multiple (LCM) is the smallest multiple that two or more numbers have in common. To find the LCM of 10 and 15, we need to identify the common factors and multiples of the two numbers and take the highest power of each prime factor that appears in any of the numbers. The LCM of 10 and 15 is 30.

## Calculation of LCM of 10 and 15

To find the LCM of 10 and 15, we first need to identify the factors and multiples of each number.

Factors of 10: 1, 2, 5, 10

Factors of 15: 1, 3, 5, 15

Multiples of 10: 10, 20, 30, 40, 50, 60, …

Multiples of 15: 15, 30, 45, 60, 75, …

From the above lists, we can see that the common factor of 10 and 15 is 5. To get the LCM, we need to find the highest power of each factor that appears in any of the numbers. The prime factorization of 10 is 2 x 5, and the prime factorization of 15 is 3 x 5. The highest power of 2 is 1, the highest power of 3 is 1, and the highest power of 5 is 1. Therefore, the LCM of 10 and 15 is:

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LCM(10, 15) = 2 x 3 x 5 = 30

Therefore, the least common multiple of 10 and 15 is 30.

## Conclusion

In conclusion, the Least Common Multiple (LCM) is an essential concept in mathematics that is used in various real-life situations. It is the smallest multiple that two or more numbers have in common. In this article, we focused on finding the LCM of two numbers, 10 and 15, and explained the step-by-step process of finding the LCM using the prime factorization method. It is crucial to know how to find the LCM of numbers as it is used in various mathematical operations and real-life scenarios.

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