What are tree mistake in this sentence?

Question

Answer

maybe u want to ask" What is the tree?" or  " Where is the tree?"

Answer

Ok, I think you mean "what are the three mistakes in this question?" Therefore, the three mistakes are:
1. Include "the" ("What are THE...)
2. "three" instead of "tree"
3. MistakeS is plural.

Answer

what is a tip????

what are the three mistakes in this sentence?

Answer

what are the three mistakes in this sentence?

Answer

"tree" should be "three".... am I right? 

by using "three", your 'mistake' must be "mistakes"

:)