You wrote a program to find the factorial of a number using recursion. 4! =

24

Explanation:

Anything "factorial" is the result of multiplying the number by itself and all numbers below it, so:

4! = 4 × 3 × 2 × 1 = 24

There's no other info for this question so I assume you just wanted the answer, but as an example of a program here's a function that would work it out for you by using recursion in javascript, to use this you would call factorial(4) like at the bottom:

function factorial(num) {

 if (num < 0)  

       return -1;

 else if (num == 0)  

     return 1;

 else {

     return (num * factorial(num - 1));

 }

}

factorial(4);