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# What is numbers for?

I am bit confused with this problem. I have created the function but what am I suppose to do with the constant "numbers"?

filter.swift
```let numbers = [Int](0...50)

// Enter your code below

func isOdd (n: Int) -> Bool {

return numbers % n != 0
}
```

Hi Bruce!

Challenge Task 2 of 2 "Given an array of integers, called numbers, use the filter function (and the helper function we created) to create a new array containing only odd numbers. Assign this new array to a constant named oddNumbers." asks you to make use of the `filter` function as follows:

```let numbers = [Int](0...50)

// Enter your code below
func isOdd(i:Int) -> Bool {

return i % 2 != 0
}
let oddNumbers = numbers.filter(isOdd)
```