Timeline for Why the earphones in the pocket always form knots? How to explain this problem in Maths?
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Mar 22, 2016 at 10:27 | history | edited | Bruce Lee | CC BY-SA 3.0 |
corrections
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| Mar 22, 2016 at 10:19 | history | answered | Bruce Lee | CC BY-SA 3.0 |