Expert Dot Net

using System;

using System.Collections;

using System.Collections.Generic;

using System.Text;

using System.Linq;

public class LINQDemo1 {

    public static void Main() {

        int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };

        var query = numbers.Aggregate((a, b) => a * b);

    }

}