I am having problem in this question.I dont know how to approach**Tell us what’s happening:**

**Your code so far**

```
function pairwise(arr, arg) {
return arg;
}
pairwise([1,4,2,3,0,5], 7);
```

**Your browser information:**

Your Browser User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36`

.

**Link to the challenge:**

https://www.freecodecamp.org/challenges/pairwise