I can't understand this?

Question

What will be the content of the paragraph after the user clicks on it twice?
<p id='txt' onclick='test();'>20</p>
<script>
function test() {
var x=document.getElementById('txt');
var n = x.innerHTML;
x.innerHTML = n/2;
}
</script>
How the answer is 5?

Answer 1

"How the answer is 5?"

Because as you click on the paragraph twice, it makes it (20/2 = 10) on the first click and (10/2 = 5) on the second click.

Answer 2

Because it have been clicked twice.
On first click: 20/2 = 10
On second click: 10/2 = 5
That's how the answer is 5.

Answer 3

5

Answer 4

i seee

Answer 5

i think the answer is == 5