Correct
九十
/ jiǔ shí /
Strokes
Definition
ninety
Example
As a Numeral
ninety
1
Dìjiǔshí
第九十
ninetieth
2
Jiǔshí
九十
zhōunián
周年
xiàoqìng
校庆
huádàn
华诞
ninetieth anniversary of the founding (of a school)
3
Jiǔshí
九十
niándài
年代
(in) the nineties; (in) the'90s; (in) the 1990s
4
Jiǔshí
九十
suì
岁
chūtóu
出头
in one's early nineties