# Sum Of Multiples in C#

#### Given a number, find the sum of all the multiples of particular numbers up to but not including that number.

1 | ```
exercism fetch csharp sum-of-multiples
``` |

# Sum Of Multiples

Given a number, find the sum of all the multiples of particular numbers up to but not including that number.

If we list all the natural numbers up to but not including 20 that are multiples of either 3 or 5, we get 3, 5, 6 and 9, 10, 12, 15, and 18.

The sum of these multiples is 78.

Given a number, find the sum of the multiples of a given set of numbers, up to but not including that number.

## Hints

This exercise requires you to process a collection of data. You can simplify your code by using LINQ (Language Integrated Query). For more information, see this page.

### Submitting Exercises

Note that, when trying to submit an exercise, make sure the exercise file that you're submitting is in the `exercism/csharp/<exerciseName>`

directory.

For example, if you're submitting `bob.cs`

for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`

.

## Source

A variation on Problem 1 at Project Euler http://projecteuler.net/problem=1

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.