Use Aggregate on an array

   
 


using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;

public class MainClass {
    public static void Main() {
        int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        var query = numbers.Aggregate((a, b) => a * b);
    }
}