If $a = 5, $b = 'a', what is the value of $$b?
<p>Explain this interview question to me:</p>

<p><strong>Q:</strong> If the variable $a is equal to 5 and variable $b is equal to character a, what’s the value of $$b?</p>

<p><strong>A:</strong> 5, it’s a reference to existing variable.</p>
