Weigh your brain

Logic Level 2

You have 9 balls of exactly same appearance , and one physical balance. 8 of those balls have equal weight , and rest 1 is lighter than them. What is the minimum number of weighing that you should perform using those balls only and the balance so that you can (claim) identify the lightest ball.?

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Weigh your brain

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.