Why is it always 0 of 5 correct?

/* 
  1. Store correct answers
   - When quiz begins, no answers are correct
*/

let correct = 0;

// 2. Store the rank of a player

let rank = "none";
// 3. Select the <main> HTML element

const main = document.querySelector('main');


/*
  4. Ask at least 5 questions
   - Store each answer in a variable
   - Keep track of the number of correct answers
*/

const answer1 = prompt("What is the 1st number?");
 if ( answer1.toUpperCase() === 'one' ) { correct += 1;
                                       }
const answer2 = prompt("What is the 2nd number?");
  if ( answer2.toUpperCase() === 'two' ) { correct += 1;
                                       }
const answer3 = prompt("What is the 3rd number?");
if ( answer3.toUpperCase() === 'three' ) { correct += 1;
                                       }
const answer4 = prompt("What is the 4th number?");
 if ( answer4.toUpperCase() === 'four' ) { correct += 1;
                                       }
const answer5 = prompt("What is the 5th number?"); 
  if ( answer5.toUpperCase() === 'five' ) { correct += 1;
                                       }


/*
  5. Rank player based on number of correct answers
   - 5 correct = Gold
   - 3-4 correct = Silver
   - 1-2 correct = Bronze
   - 0 correct = No crown
*/

if ( correct === 5 ) {
  rank = "Gold"; 
}
else {
  rank = "None :(";
}



// 6. Output results to the <main> element

main.innerHTML = `<h2> You got ${ correct } out of 5 questions correct. Rank ${rank} </h2>`;