# LCM - NumPy uFuncs - WTMatter

LCM - NumPy uFuncs - WTMatter: This is a detailed tutorial of the NumPy LCM Universal Functions. Learn the usage of these functions with the help of examples.

This is a detailed tutorial of the NumPy LCM Universal Functions. Learn the usage of these functions with the help of examples.

### Lowest Common Multiple (LCM)

In the number theory, the lowest common multiple of any two integers is the smallest integer that is divisible by both a and b. Where a and b cannot be zero in number, these are helpful in the fractions which we can add, subtract or compare with other values. So in very simple words, it is the least number which can be a common multiple of any two numbers.

Let us take an example:

#### Finding LCM in Arrays

In order to find the Lowest Common Multiple of all the elements in an array, we have a method in NumPy. With the help of this, we can find the lcm of all the elements in an array. The method we can use to fulfil this purpose is `reduce()`. This method will use the Unfunc and will help in reducing the array by one dimension.

Let us take an example to understand it better:

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