Correct
三十
/ sān shí /
Strokes
Definition
thirty/30
Example
As a Numeral
thirty; thirtieth
1
Dìsānshí
第三十
thirtieth
2
Sānshí
三十
suì
岁
shēngrì
生日
one's thirtieth birthday
3
Sānshí
三十
niándài
年代
in the thirties; in the 30s
4
Sānshí
三十
suì
岁
chūtóu
出头
de
的
nánshì
男士
man in his early thirties