File:Abacus Base Five Ten.PNG
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Abacus_Base_Five_Ten.PNG (517 × 246 pixels, file size: 86 KB, MIME type: image/png)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:33, 11 April 2008 | | 517 × 246 (86 KB) | commons>Robertolyra | {{Information |Description=This is the small abacus of Al-Khwārizmī abacus with base-five/ten. All upper beans have the five values, and all down beans has the ten values. Hypothetically, this kind of abacus was us |
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