Do i really need use AsQueryable() on collection?
<p>Example code:</p>

<pre><code>    List&lt;Student&gt; Students = new List&lt;Student&gt;()   
    {   
        new Student(101, "Hugo", "Garcia", new List&lt;int&gt;() { 91, 88, 76, 93 }),  
        new Student(102, "Rick", "Adams", new List&lt;int&gt;() { 70, 73, 66, 90 }),  
        new Student(103, "Michael", "Tucker", new List&lt;int&gt;() { 73, 80, 75, 88 }),  
        new Student(104, "Fadi", "Fakhouri", new List&lt;int&gt;() { 82, 75, 66, 84 }),  
        new Student(105, "Peter", "Barrows", new List&lt;int&gt;() { 67, 78, 70, 82 })  
    };

    var query = from student in Students
                where student.Marks.AsQueryable().All(m =&gt; m &gt; 70)
                select student;

    foreach (Student student in query)
    {
        Console.WriteLine("{0} {1}&lt;br /&gt;", student.FirstName, student.LastName);
    }
</code></pre>

<p>But if i change the query to</p>

<pre><code>    var query = from student in Students
                where student.Marks.All(m =&gt; m &gt; 70)
                select student;
</code></pre>

<p>This also work and same result,so what the different?
Thanks you for help.</p>
