必要 ひつよう じゅう ぷん条件 じょうけんじゃなかったです
hitsuyōjū pun jōkenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 必要十分条件

1. Wasn't a necessary and sufficient condition.; Wasn't enough.

Past/Perfective
Negative
Polite
Casual Register