Student Visa (F1, F2, M1, M2)

Profile - Been rejected thrice in 2011 for F1 visa
              University - Oklahoma city University for the first 2 times and NYIT for the 3rd time.

Visa Interview date - April 25th 2015, Venue - Chennai, Visa type - F1
University - University of South Florida, Master's in Management.
Work experience - 2 years, GRE - old format gave in 2010 dec (converted score - 302), Toefl - 102.
Profile - Below Average.
Interview time - 8:30. Reached the line at 7:30am.
Went inside the Building at 7:55 and within no time was already in line for the counter no 22.

ME - Good Morning Sir.
VO - Morning.

VO- Passport and I20.
ME - Handed him.

(there was a staple on my passport)
VO - handed my passport back and asked me to take it off and come back in line.

Waited for my turn again.
Handed him the passport again.
Typed something for few seconds with silence.

VO - Have you applied for visa before?
ME - Yes sir.

VO - you have been rejected 4 times.
ME - No sir it is three times.

VO - No it is 4 times.
ME - Kept quite.

Was 100 percent sure wont get the visa

VO - Ok your visa is approved.
ME - Thank you very much sir.

So, My visa interview ended in just 2 mins without even asking me which university. Maybe it was just luck and also i chose a decent university.
Just wanted to share my exp with you guys.