IQ LEVEL TEST

IQ LEVEL TEST asked @ INFOSYS

A man wanted 2 enter a CLUB
Every member knew the password,
The man was hidden besides the wall & tried 2 listen the password.
A member came, watchman said 'TWELVE'
Member replied 6,
Watchman opened door.

Another member came, watchman said 'SIX'
Member replied 3,
Watchman opened door.

Man thought he got d PASSWORD
He went at door,
Watchman said 'EIGHT'
Man replied 4, Watchman din't opened door.

What was the PASSWORD?