It's a method that lets you quickly find both the greatest common factor and the least common multiple of two numbers. I am not sure how well it works for more than two numbers at a time. If you search online for "ladder method", you'll quickly find several videos that show you how to do it.
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The greatest common multiple of any set of integers is infinite, no matter what method you use.
The ladder method, also known as the ladder division method, is a technique used to find the greatest common factor (GCF) of multiple numbers. To use the ladder method for 3 numbers, you would typically write the numbers at the top of three separate columns. Then, you would find the prime factors of each number and list them in a column beneath. Next, you would circle the common factors in each column and multiply them to find the GCF. Repeat this process until you have no common factors left.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself. So you do not need to use the division ladder or any other method!
Jacobs ladder is a movie and cats craddle thing.