Deg
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| Enghraifft o'r canlynol | rhif naturiol, rhif triongl, deficient number, rhif cyfansawdd, eilrif, centered triangular number, centered nonagonal number, decagonal number, tetrahedral number, power of 10, harshad number  |
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 Ffeiliau perthnasol ar Gomin Wicimedia | |
Rhif rhwng naw ac un deg un yw deg (10) (hefyd deng o flaen rhai geiriau).
