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

public class MainClass {
    public static void Main() {
        int[] numbers = { 1, 11, 3, 19, 41, 65, 19 };

        bool onlyOdd = numbers.All(n => n % 2 == 1);

        Console.WriteLine("The list contains only odd numbers: {0}", onlyOdd);
    }
}

    

   
 

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

public class MainClass{
   public static void Main(){
       int[] numbers = { 2, 6, 1, 56, 102 };
       Console.Write(numbers.All(e => e % 2 == 0) ? "Yes, they are" : "No, they aren't");
   }
}

    

   
 

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

public class MainClass {
    public static void Main() {
        IEnumerable<int> intSequence = Enumerable.Range(1, 10);
        foreach (int item in intSequence)
            Console.WriteLine(item);
        int sum = intSequence.Aggregate(0, (s, i) => s + i);
        Console.WriteLine(sum);
    }
}

    

   
 

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

public class MainClass {
    public static void Main() {
        int N = 5;
        IEnumerable<int> intSequence = Enumerable.Range(1, N);
        foreach (int item in intSequence)
            Console.WriteLine(item);
        int agg = intSequence.Aggregate((av, e) => av * e);
        Console.WriteLine("{0}! = {1}", N, agg);

    }
}

    

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

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

   
 


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);
    }
}