title: c# - LINQ find 2D jagged array minimum, return index
body: <p>I have a standard 2D jagged array <code>int[][] arr</code>.</p>
  
  <p>Let's call <code>i</code> and <code>j</code> the indices for row and column.</p>
  
  <p>I'd like to retrieve via LINQ the indices <code>i</code> and <code>j</code> which points to the minimum of the matrix.</p>
  
  <p>An idea of what I am trying to achieve is bri</p>
  
  <pre><code>from num in arr
  where min = (from num in arr select min(num))
  select i, j
  </code></pre>