Solution achieved! Feedback please.

var answers = '';
var correctQuestions = [];
var wrongQuestions = [];
//Questions
var questions = [
  ['What is my first name?','crystal'],  
  ['What is my favorite color?','orange'],  
  ['Where do I live?','rhode island']
];

//Ask questions
for(var i = 0; i < questions.length; i += 1){
  answers = prompt(questions[i][0]); 
  answers = answers.toLowerCase();
  //Test answers
  if(answers === questions[i][1]){
    alert('Yeah you got the answer right!');     
    correctQuestions.push(questions[i][0]); 
  }
  else{
    alert('Sorry you got the answer wrong...');      
    wrongQuestions.push(questions[i][0]);   
  }  
}

//Display correct questions
if(correctQuestions.length > 0 ){  
  var html = '<h2>Questions I got Right</h2> <ol>';
  for(var i = 0; i < correctQuestions.length; i += 1){
    html += '<li>' + correctQuestions[i] + '</li>';
  }
  html += '</ol>';
  document.write(html);  
}

//Display wrong questions
if(wrongQuestions.length > 0){  
  var html = '<h2>Questions I got Wrong</h2> <ol>';
  for(var i = 0; i < wrongQuestions.length; i += 1){
    html += '<li>' + wrongQuestions[i] + '</li>';
  }
  html += '</ol>';
  document.write(html);  
}