n]</code> is
   <code class="code">f (... (f (f a b1 c1) b2 c2) ...) bn cn</code>.
   Raise <code class="code"><span class="constructor">Invalid_argument</span></code> if the two lists have
   different lengths.<br>
</div>
<pre><span id="VALfold_right2"><span class="keyword">val</span> fold_right2</span> : <code class="type">('a -&gt; 'b -&gt; 'c -&gt; 'c) -&gt; 'a list -&gt; 'b list -&gt; 'c -&gt; 'c</code></pre><div class="info">
<code class="code"><span class="constructor">List</span>.fold_right2 f [a1; 