what would be the if statement if the previous question loaded is repeated or equal to the same..

using UnityEngine; using UnityEngine.UI; using UnityEngine.SceneManagement; using System.Collections; using System.Collections.Generic; using System.Linq;

public class GameManager : MonoBehaviour { public Question[]questions; public Button[]bttn; public Button[]factbluff; public int life=5;

 private static List<Question>unansweredQuestions;
 private Question currentQuestion;


 public GameObject GameQuestionHolder;
 public GameObject GameAnswerHolder;
 public GameObject GameAnswer1Holder;
 public GameObject GameAnswer2Holder;
 public GameObject GamePauseHolder;
 public GameObject IncorrectAnswerHolder;
 public GameObject CorrectAnswerHolder;



 [SerializeField]
 private Text questiontext;

 [SerializeField]
 private Text answertext;

 [SerializeField]
 private Text answertext1;

 [SerializeField]
 private Text answertext2;
 [SerializeField]
 private Text lifenum;

 [SerializeField]
 private float timeBetweenQuestions = 1f;

 [SerializeField]
 private Animator animator;

 void Start()
 {
     
     if (unansweredQuestions == null || unansweredQuestions.Count==0) 
     {
         unansweredQuestions = questions.ToList<Question>();
     }

     SetCurrentQuestion ();
 } 

 void SetCurrentQuestion()
 {
     int randomQuestionIndex = Random.Range (0, unansweredQuestions.Count);
     currentQuestion = unansweredQuestions [randomQuestionIndex];
     questiontext.text=currentQuestion.questionText;
 }

 IEnumerator TransitionToNextQuestion()
 {
     unansweredQuestions.Remove (currentQuestion);

     yield return new WaitForSeconds (timeBetweenQuestions);

     SceneManager.LoadScene (SceneManager.GetActiveScene().buildIndex);
 }

 public void GamePause()
 {
     GamePauseHolder.SetActive (true);
     GameQuestionHolder.SetActive (false);
     GameAnswerHolder.SetActive (false);
     GameAnswer1Holder.SetActive (false);
     GameAnswer2Holder.SetActive (false);
     IncorrectAnswerHolder.SetActive (false);
     CorrectAnswerHolder.SetActive (false);

 }

 public void GameQuestion()
 {

     GameQuestionHolder.SetActive (true);
     GameAnswerHolder.SetActive (false);
     GameAnswer1Holder.SetActive (false);
     GameAnswer2Holder.SetActive (false);
     GamePauseHolder.SetActive (false);
     IncorrectAnswerHolder.SetActive (false);
     CorrectAnswerHolder.SetActive (false);
 }    

 public void GameMenu()
 {
     SceneManager.LoadScene ("GameMenu");
 }

 public void SelectBluffer()
 {
     
     GameAnswerHolder.SetActive (true);
     GameQuestionHolder.SetActive (false);
     GameAnswer1Holder.SetActive (false);
     GameAnswer2Holder.SetActive (false);
     GamePauseHolder.SetActive (false);
     IncorrectAnswerHolder.SetActive (false);
     CorrectAnswerHolder.SetActive (false);
     answertext.text = currentQuestion.answers [0].answerText;

 }
 public void SelectBluffer1 ()
 {
     
     GameAnswer1Holder.SetActive(true);
     GameQuestionHolder.SetActive (false);
     GameAnswerHolder.SetActive (false);
     GameAnswer2Holder.SetActive (false);
     GamePauseHolder.SetActive (false);
     IncorrectAnswerHolder.SetActive (false);
     CorrectAnswerHolder.SetActive (false);
     answertext1.text = currentQuestion.answers [1].answerText;

 }

 public void SelectBluffer2()
 {
         GameAnswer2Holder.SetActive (true);
         GameQuestionHolder.SetActive (false);
         GameAnswerHolder.SetActive (false);
         GameAnswer1Holder.SetActive (false);
         GamePauseHolder.SetActive (false);
         IncorrectAnswerHolder.SetActive (false);
         CorrectAnswerHolder.SetActive (false);
         answertext2.text = currentQuestion.answers [2].answerText;

 }

 public void Fact()
 {
     if (currentQuestion.answers [0].isTrue ) 
     {
         CorrectAnswerHolder.SetActive (true);
         lifenum.text = "Life : " + life.ToString ();
     }
     else
     {
         IncorrectAnswerHolder.SetActive (true);

     }
     StartCoroutine (TransitionToNextQuestion ());
 }


 public void Bluff()
 {
     if (!currentQuestion.answers [0].isTrue) 
     {
         
         CorrectAnswerHolder.SetActive (true);
     }
     else
     {
         
         IncorrectAnswerHolder.SetActive (true);
     }
     StartCoroutine (TransitionToNextQuestion ());
 }

 public void Fact1()
 {
     if (currentQuestion.answers [1].isTrue ) 
     {
         CorrectAnswerHolder.SetActive (true);
     }
     else
     {
         IncorrectAnswerHolder.SetActive (true);
     }
     StartCoroutine (TransitionToNextQuestion ());
 }


 public void Bluff1()
 {
     if (!currentQuestion.answers [1].isTrue) 
     {
         CorrectAnswerHolder.SetActive (true);
     }
     else
     {
         IncorrectAnswerHolder.SetActive (true);
     }
     StartCoroutine (TransitionToNextQuestion ());
 }

 public void Fact2()
 {
     if (currentQuestion.answers [2].isTrue ) 
     {
         CorrectAnswerHolder.SetActive (true);
     }
     else
     {
         IncorrectAnswerHolder.SetActive (true);
     }
     StartCoroutine (TransitionToNextQuestion ());
 }


 public void Bluff2()
 {
     if (!currentQuestion.answers [2].isTrue) 
     {
         CorrectAnswerHolder.SetActive (true);
     }
     else
     {
         IncorrectAnswerHolder.SetActive (true);
     }
     StartCoroutine (TransitionToNextQuestion ());
 }

}