小弟從下方網址查到的資料
http://cdict.giga.net.tw/?q=%AD%FE

哪 注音[ㄋㄚˇ] 通用[na3] 漢語[na3] 筆劃數[10] 部首[口]
how
which

哪 注音[ㄋㄚ˙] 通用[na5] 漢語[na5] 筆劃數[10] 部首[口]
(final part. preceded by N)

哪 注音[ㄋㄟˇ] 通用[nei3] 漢語[nei3] 筆劃數[10] 部首[口]
which (followed by M or Num)