Today I have Start to solve problems in Project Euler

It is really amazing website to start practice your self  in programming tricks and also mathematics

I solve the first problem which was very easy , it can be solved by many ways and more simpler than my way

but I love .net 3.5

Here is my solution

var numbers = from number in Enumerable.Range(0, 1000)
                            where ((number % 3 == 0) || (number % 5 == 0))
                            select number;
 var answer = numbers.Sum();
 Console.WriteLine(answer);