Correct

老几

/ lǎo jī /
Strokes

Example

As a Noun

order of seniority among brothers or sisters

1
páiháng
排行
lǎo
  
?

Where do you come in the family?

As a Noun

[used in rhetorical questions to express disparagement]

2
suàn
lǎo
  
,
cānjiā
参加
yàng
那样
zhòngyào
重要
de
huì
会议
  
?

Who should I think I am to attend that important meeting?

3
suàn
lǎo
  
?

Who do you think you are?