Lambda expression check exists or not get bool in c#

I always want to be a smart developer that is why i always be in search in one line optimized code which could solve my problem soon in smart way. Today i was trying to filter list with match an item to get Boolean value. Instead of using loop and going with FirstOrDefault of lambda i tried Any keyword and its worked for me.

Best Code samples : 

       
using System.Linq;
    bool has = list.Any(o => o.name == "Raj");
       
 

       
var hasRaj = (from customer in list where customer.FirstName == "Raj" select customer).Any();
       
 

       
Employee emp = AllEmp.FirstOrDefault(o => o.name == "Raj");
if (emp  != null)
{
    // Use emp
}
       

       
using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
 List list = new List();
 list.Add(7);
 list.Add(11);
 list.Add(13);

 // See if any elements with values greater than 10 exist
 bool exists = list.Exists(element => element > 10);
 Console.WriteLine(exists);

 // Check for numbers less than 7
 exists = list.Exists(element => element < 7);
 Console.WriteLine(exists);
    }
}

Output

True
False