# Learn How to Get the Last Digit of x - Comprehensive Guide

Are you tired of manually calculating the last digit of a number? Look no further! This quick expression guide will teach you how to retrieve the last digit of any number using a simple mathematical formula.

## What is the Last Digit of a Number?

The last digit of a number refers to the digit located at the right-most position of the number. For example, in the number 12345, the last digit is 5.

## Retrieving the Last Digit of a Number

To retrieve the last digit of a number, follow these simple steps:

1. Divide the number by 10.
2. Retrieve the remainder of the division using the modulus operator (%).
3. The remainder is the last digit of the number.

Here's an example:

``````let num = 12345;
let lastDigit = num % 10;
console.log(lastDigit); // Output: 5
``````

## FAQ

### Q: Can this method be used for negative numbers?

A: Yes, this method works for both positive and negative numbers.

### Q: What happens if I divide a number by 0?

A: Division by zero is undefined and will result in an error.

### Q: Is there a limit to the size of the number that can be used with this method?

A: No, this method works for any size number.

### Q: Can this method be used in other programming languages?

A: Yes, this method is applicable in most programming languages.

### Q: Is there a faster way to retrieve the last digit of a number?

A: While there are other methods, this one is generally considered the quickest and most efficient.

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