「あしたのジョー」以外の作品の多くは "梶原一騎" のペンネームで書かれました。
I have searched and found that 「多く」is adverb or adjective and it should be placed before the particle 「の」. Is the word a kind of noun or particle 「の」can be placed before adjective?
「あしたのジョー」以外の作品の多くは "梶原一騎" のペンネームで書かれました。
I have searched and found that 「多く」is adverb or adjective and it should be placed before the particle 「の」. Is the word a kind of noun or particle 「の」can be placed before adjective?
In this case「多く」is not an adjective or an adverb.
多く is defined as a noun in Japanese dictionaries.
See weblio(大辞林), here: http://www.weblio.jp/content/%E5%A4%9A%E3%81%8F
There are other nouns that follow a similar pattern, like「近く」and「遠く」.
多く is a nominalized word formed from the te-stem of the adjective 多い.
= 多い [adjective] --> 多く [連用形 / te-stem] --> 多く [nominalized form]
So this sentence makes sense.
Another example:
私の学校の生徒の多くは女性だ
The students in my school are mostly girls.