<p>What books do you guys recommend for some fun and challenging math problems? I already have the Moscow Puzzles and have complete both Art of Problem Solving books.</p>
<p>international math olympiad problems, maybe?</p>
<p>What books do you guys recommend for some fun and challenging math problems? I already have the Moscow Puzzles and have complete both Art of Problem Solving books.</p>
<p>international math olympiad problems, maybe?</p>