HSK C2/W2/V2
Correct

/ zhǐ /
Strokes

Definition

paper/classifier for documents, letter etc

Example

As a Noun
paper
1
zhāng
zhǐ

a piece/sheet of paper

As a Measure word
[for letters, documents, etc]
2
zhǐ
jìnlìng
禁令

a ban; an injunction

3
zhǐ
gōngwén
公文

a document

4
Dān
单据
sān
zhǐ

three bills