Q:

What is the LCM of 25 and 62?

Accepted Solution

A:
Solution: The LCM of 25 and 62 is 1550 Methods How to find the LCM of 25 and 62 using Prime Factorization One way to find the LCM of 25 and 62 is to start by comparing the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here: What are the Factors of 25? What are the Factors of 62? Here is the prime factorization of 25: 5 2 5^2 5 2 And this is the prime factorization of 62: 2 1 Γ— 3 1 1 2^1 Γ— 31^1 2 1 Γ— 3 1 1 When you compare the prime factorization of these two numbers, you want to look for the highest power that each prime factor is raised to. In this case, there are these prime factors to consider: 5, 2, 31 2 1 Γ— 5 2 Γ— 3 1 1 = 1550 2^1 Γ— 5^2 Γ— 31^1 = 1550 2 1 Γ— 5 2 Γ— 3 1 1 = 1550 Through this we see that the LCM of 25 and 62 is 1550. How to Find the LCM of 25 and 62 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 25 and 62 is to begin to list a few multiples for each number. If you need a refresher on how to find the multiples of these numbers, you can see the walkthroughs in the links below for each number. Let’s take a look at the multiples for each of these numbers, 25 and 62: What are the Multiples of 25? What are the Multiples of 62? Let’s take a look at the first 10 multiples for each of these numbers, 25 and 62: First 10 Multiples of 25: 25, 50, 75, 100, 125, 150, 175, 200, 225, 250 First 10 Multiples of 62: 62, 124, 186, 248, 310, 372, 434, 496, 558, 620 You can continue to list out the multiples of these numbers as long as needed to find a match. Once you do find a match, or several matches, the smallest of these matches would be the Least Common Multiple. For instance, the first matching multiple(s) of 25 and 62 are 1550, 3100, 4650. Because 1550 is the smallest, it is the least common multiple. The LCM of 25 and 62 is 1550. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 61 and 67? What is the LCM of 12 and 41? What is the LCM of 38 and 98? What is the LCM of 63 and 123? What is the LCM of 77 and 127?