## 1.1 - Product

```
let rec product = function
	| [] -> 0
	| x::t -> x + product t;;
```
## 1.2 - Count
```
let rec count x n =
	if x = [] then
		0
	else
		let e::t = x
		if e = x then
			1 + count t n
		else
			count t n
```