很多的 + noun vs 很多 + noun What is the difference between 很多的 and 很多? Here are some examples:


他们在这个乌代布尔地区做了很多的调查
比如说攒很多的钱买一个LV的包
为什么有时候人会在人很多的地方觉得自己很寂寞？ 


Is 的 needed in all three sentences?
Basically, 的 can always be omitted for a simple adjective.
But for emphasis of the adjective, 的 is added (so omit it if not).
For the omission of 的, check this link, kind of CN quora (if it is fine to read).
The third sentence is an exception of your description. 很多 comes after 人, so it is (人很多)的地方 and 的 cannot be omitted here to avoid ambiguity.