Questions about S-V

[derpderp]

I know that "paper of all kinds" or "the house of Andrea" is singular. How about "all kinds of paper"? Is it singular or plural?

Thanks

[RonPurewal]

I know that "paper of all kinds" or "the house of Andrea" is singular. How about "all kinds of paper"? Is it singular or plural?

Thanks

the use of "all kinds of xxxx" to mean, essentially, "a wide variety of xxxxx" is informal language, and so won't be tested on the gmat exam. therefore, it's irrelevant here.

if you were to see "all types of..." in the literal, formal sense -- meaning, literally, every single type of something -- then it would be plural, just like any similar construction. e.g.,
All types of frogs are classified as amphibians"”even frogs that live nowhere near water.