- Traditional Chinese Character(HanT):
未知數兒
- Simplified Chinese Character(HanS):
未知数儿
- Bopomofo(Mandarin Phonetic Symbols): ㄨㄟˋ ㄓ ㄕㄨˋ ㄦˊ (ㄨㄓㄕㄦ)
- Bopomofo(Zhuyin Keyboard Input/IME): "jo45 gj4-6" (jo45gj4-6)
- 「未知數兒」的注音符號/「未知數兒」怎麼發音怎麼唸: ㄨㄟˋ ㄓ ㄕㄨˋ ㄦˊ
- (ASCII) Hanyu Pinyin: "weizhishuer" "Wei4Zhi1Shu4Er2" "Wei4 Zhi1 Shu4 Er2" (WZSE)
- (Latin) Hànyǔ Pīnyīn: WèiZhīShùér [ Wèi Zhī Shù ér ]
- (英文翻譯) English Translation: "unknown number"
- (西語翻譯) Traducción Español: "numero desconocido"
- (日文翻譯) 日本語翻訳: "未知数"