About unapproved sentences

You may see some sentences in red. These sentences are not approved by Tatoeba's community. They raise copyright issues or are otherwise problematic. If you are a contributor, please avoid translating them.

Logs

- date unknown
This is a difficult math problem.
- date unknown
linked to 218170
nickyeow - Jul 3rd 2010, 09:04
linked to 417760
nickyeow - Jul 3rd 2010, 09:04
linked to 417761
landano - Oct 22nd 2010, 21:57
linked to 580529
zorder - Apr 26th 2011, 13:14
linked to 857046
duran - Nov 4th 2011, 07:06
linked to 1216352
nonong - Aug 21st 2012, 07:03
linked to 1789404
Guybrush88 - Sep 10th 2014, 20:53
linked to 3486045
cueyayotl - 12 day(s) ago
linked to 3551577
maydoo - 12 day(s) ago
linked to 3551579

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Sentence #55481

eng
This is a difficult math problem.

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