I am on lesson 101 of Javascript. I’m SO close to finishing the basics (although I’m probably going to need to keep peeking back and forth at it). But I don’t understand one of the things its saying here.

"Recursion is the concept that a function can be expressed in terms of itself. To help understand this, start by thinking about the following task: multiply the first `n`

elements of an array to create the product of those elements. Using a `for`

loop, you could do this:

```
function multiply(arr, n) {
var product = 1;
for (var i = 0; i < n; i++) {
product *= arr[i];
}
return product;
}
```

However, notice that `multiply(arr, n) == **multiply(arr, n - 1) * arr[n - 1]**`

. That means you can rewrite `multiply`

in terms of itself and never need to use a loop."

Now what I’m not understanding, is where does the (n - 1) come from at the bottom where it says `multiply(arr, n) == **multiply(arr, n - 1) * arr[n - 1]`

? I thought it would be n + 1 since statement 3 in the forloop is that i increases by 1 each time.