title: F# Type Annotation For Lists
body: <p>In F# what is the type annotation for a typed list (e..g list of int)? With a simple function I can do annotations as follows:</p>
  
  <p>let square(x:int) = ... </p>
  
  <p>I've annotated x as an int type. But what if I want to do a type annotation for an int list? For example, let's say I have a max function that expects a list - how would I do a type annotation for it? </p>
  
  <p>let max(numbers:??) = ... </p>