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Lets tie a knot!

Logic Level 1

Which of the above will not form a knot if the two ends of the string are pulled in opposite directions?

A

B

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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 8 million people

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

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by Tapas Mazumdar

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