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← Courses›Creative ChallengesModule 1 · 🕵️ Code Detective (15)›🕵️ Case 01: The Off-By-One Killerfix1 / 104
+125 XP
Task
Find the off-by-one bug in `total()` and fix it. The test will catch you if you fix the wrong line.
✏️ Write your code here
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One-time download (~1 MB). Then it runs instantly.
📊 Result
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