New solution

heisei edited
revision #15397 newer →
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+### Statement
+
+$4.6.15.$ [Insert the problem statement]
+
+### Solution
+
+![For problem $4.6.15$ |989x1280, 31%](../../img/4.6.15/scan-0.png)
+
+
+
+#### Answer
+
+[Insert a concise answer or boxed result]