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< Problem:IOL | 2011
This problem is about EAN-13 and was written by Hugh Dobbs. Given below are links to the problem in the working languages of the IOL.
| Language | Problem | Solution |
|---|---|---|
| English (A) | Problem:IOL/2011/i5/en(A) | |
| English | Problem:IOL/2011/i5/en | |
| Bangla* | Problem:IOL/2011/i5/bn | |
| Bulgarian | Problem:IOL/2011/i5/bg | |
| Chinese (S)* | Problem:IOL/2011/i5/zh | |
| Chinese (T)* | Problem:IOL/2011/i5/zt | |
| Czech | Problem:IOL/2011/i5/cs | |
| Danish* | Problem:IOL/2011/i5/da | |
| Dutch | Problem:IOL/2011/i5/nl | |
| English (B) | Problem:IOL/2011/i5/en(B) | |
| Estonian | Problem:IOL/2011/i5/et | |
| Finnish* | Problem:IOL/2011/i5/fi | |
| French* | Problem:IOL/2011/i5/fr | |
| German* | Problem:IOL/2011/i5/de | |
| Hungarian* | Problem:IOL/2011/i5/hu | |
| Japanese* | Problem:IOL/2011/i5/ja | |
| Korean* | Problem:IOL/2011/i5/ko | |
| Latvian* | Problem:IOL/2011/i5/lv | |
| Polish | Problem:IOL/2011/i5/pl | |
| Portuguese | Problem:IOL/2011/i5/pt(B) | |
| Romanian* | Problem:IOL/2011/i5/ro | |
| Russian | Problem:IOL/2011/i5/ru | |
| Slovenian | Problem:IOL/2011/i5/sl | |
| Spanish* | Problem:IOL/2011/i5/es | |
| Swedish | Problem:IOL/2011/i5/sv | |
| Turkish* | Problem:IOL/2011/i5/tr | |
| Ukrainian* | Problem:IOL/2011/i5/uk |
* Languages marked with an asterisk are unofficial translations.