YOU SAID:

Why are cows good in math? I don't know, why?

INTO JAPANESE

牛はなぜ数学が得意ですか？わからない、なぜ？

BACK INTO ENGLISH

Why are cows good at mathematics? I do not know, why?

INTO JAPANESE

牛はなぜ数学が得意なのですか。何故かはわからない？

BACK INTO ENGLISH

Why are cows good at mathematics? Why do not you know?

INTO JAPANESE

牛はなぜ数学が得意なのですか。なぜあなたは知らないのですか？

BACK INTO ENGLISH

Why are cows good at mathematics? Why do not you know?