Any - Simple

Query

public void Linq67()
{
    string[] words = { "believe", "relief", "receipt", "field" };
  
    bool iAfterE = words.Any(w => w.Contains("ei"));
 
    Console.WriteLine("There is a word that contains in the list that contains 'ei': {0}", iAfterE);
}

Lambda Expression

public void Linq67()
{
    string[] words = { "believe", "relief", "receipt", "field" };
 
    bool iAfterE = words.Any(w => w.Contains("ei"));
 
    //DONE fixed typo in writeline
    Console.WriteLine("There is a word in the list that contains 'ei': {0}", iAfterE);
}

Output

There is a word that contains in the list that contains 'ei': True