Can someone please tell me why the correctAnswers count is not working in this code??

var quizList = [
    ['What is a programming language that is also a snake?', 'Python'],
    ['Who is the president of France?', 'Emmanuel Macron'],
    ['Which progeamming language is also a gem?', 'Ruby'],
    ['Which progamming language I\'m I learning right now?', 'JavaScript']
];
var correctAnswers = 0;
var ask;

function print(message) {
  document.write(message);
}

function answerQuiz ( questions ) {
    listHTML = '<ol>'
        for (var i = 0; i < questions.length; i++) {
            ask = prompt(questions[i][0]);
            ask = ask.toLowerCase();
            if (ask === questions[i][1]) {
                correctAnswers ++;
            }
                listHTML += '<li>' + questions[i][0] + ' <strong>' + questions[i][1] + '</strong>'
        }
    listHTML += '</ol>'
    print(listHTML);
    print('You answered  ' + correctAnswers + '  questions correctly!');
}

answerQuiz(quizList);