int tries = 0;             // keep a count of tries
while (true)
{
    string answerOne = Console.ReadLine();

    if (answerOne == "a coin")
    {
        Console.WriteLine("A1: {0}", answerOne);
        Console.WriteLine("YES! You got it!!!");
        break;             // end the loop on win
    }
    else if (++tries < 3)  // increment tries and check against limit
    {
        Console.Write("Nope! Nice try... give it another shot: ");
    }
    else                   // too many tries
    {
        Console.WriteLine("Sorry, you didn't get that one.");
        break;             // end the loop
    }
}

var failureCounter = 0;   // initialize counter, threshold, and QAs
var failureThreshold = 3;
Dictionary<string, string> qaStore = new Dictionary<string, string>() {  // All QAs are stored in a Dictionary 
    new KeyValuePair() 
    { 
       Key = "What has a head, a tail, is brown, and has no legs?", // where the key is the question 
       Value="a worm" // and the Value is the answer
    }
};
var rnd = new Random();

while (failureCounter <= failureThreshold && qaStore.length > 0)  // checks for every cycle that the failure count has not exceed the threshold and that there are questions in the Dictionary
{
    var randomIndex = rnd.Next(0, qaStore.length); // get a random index for the qaStore (bewteen zero and the qaStores length)
    var qa = qaStore.ToList()[randomIndex];

    Console.WriteLine(qa.Key.ToString());
    var userAnswer = Console.ReadLine();
    if(userAnswer.ToLower() == qa.Value) {
        Console.WriteLine("Correct!!!!");
        qaStore.Remove(qa); // remove the question from the qaStore dictionary so it won't get asked again
        continue; // skips the rest in THIS loop cycle but starts a new cycle in this while loop
    }
    else
    {
        Console.WriteLine("That was wrong!!");
        failureCounter++; // increases the failure count by 1
    }
}

if(failureCounter > failureThreshold) {
  // if the user has exceed the failureThreshold and the while loop ends
  Console.WriteLine("You lost!");
}
else if(qaStore.length < 0) {
 // if the user has answered all questions and the while loop ends
  Console.WriteLine("You won!");
}