Please with my solution

right = []
wrong = []

var questions_and_answers = [
  ["how many eggs?", 1],
  ["how many boys in the classroom?", 9],
  ["how many girls in the classroom?", 7]
]

for (i=0; i<questions_and_answers.length; i+=1) {
  answer = parseInt(prompt(questions_and_answers[i][0]))
  if ( answer === questions_and_answers[i][1] ) {
    right.push(questions_and_answers[i][0]);
  else {
    wrong.push(questions_and_answers[i][0]);
  }
  }
}

document.write("You got " + correct.length + " questions right")

document.write("you got these questions right")
for (i=0; i<right.length; i+=1) {
  document.write(right[i])
}

document.write("you got these questions wrong")
for (i=0; i<wrong.length; i+=1) {
  document.write(wrong[i])
}