Find the pattern: each step decreases by the same amount.<br><br>
&bull; From 64 to 60: decrease by 4<br>
&bull; From 52 to 48: decrease by 4, from 48 to 44: decrease by 4<br>
&bull; So the pattern is subtract 4 each time: 60 − 4 = 56<br>
&bull; Check: 56 − 4 = 52 ✓<br><br>
Final Answer: 56