質問: 一体、目的は何なんですか. what's the 何なん mean? 一体、目的は何なんですか found this context sentence for 目的 and am a little confused by the 何なん part. is the second なん being used to ask for an explanation? like なの? お願いします
回答: would it make more sense to you if instead of 何, 水 or any other noun was used? 一体、目的は水なんですか。 (yes, it’s the contracted form of なの)