diff --git a/lessons/LuckyNumbers.md b/lessons/LuckyNumbers.md
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+class Solution
+{
+    // Complete the function
+    // n: Input n
+    // Return True if the given number is a lucky number else return False
+    public static boolean isLucky(int n)
+    {
+        // Your code here
+        for(int i=2; i<=n; i++){
+            if(n%i==0) return false;
+            n = n - n/i;
+        }
+        return true;
+    }
+}