L1, L2 Visa

I had interview today for my L1A and L2 for my wife and son. It was scheduled at 8:15 am and it went pretty quick, complete by 9 am. Though there were many people (we got token 31 - 33) and they were not calling all sequentially. Following were the questions we were asked -

VO: greetings to all of us
We: responded to his greeting

VO: took our fingerprint while he was signing and stamping to my petition

VO: How old are you?
my son: YYYY (he told wrong first but then corrected)

VO: Have you ever been to the US
my son: yes

VO: Which school did you go while you were in the US?
my son: YYY

VO: How long have you been married (to my wife)
my wife: told the date of marriage

VO: please do the math for me?
my wife: YYY years

VO: where are you going to the US (to me)?
I: YYY at YYY state

VO: for which client?
I: YYY

VO: Do you have hire and fire authority?
I: Yes

VO: In US, do you recruit people from the other project?
I: No

Then he told that "Sir, your visa is approved"