Hard
Interview Riddles
20 XP

The Egg Drop Floor

11,018 solved 54% solve rate 46% fail rate
You have 2 eggs and a 100-floor building. Find the highest floor an egg survives using the minimum worst-case drops.
Only 54% solve this correctly
11,018 attempts
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Quick Answer & Explanation
14 drops

The answer to this riddle is 14 drops. Difficulty: Hard · Solved by 11,018 puzzle lovers.

14 drops. Drop from floors 14, 27, 39, 50, etc. (decreasing step sizes). If the egg breaks, test linearly below.
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