Did You Know The Maths Behind The Origin Of The Hindi Idiom ‘9 2 11’?

The idiom ‘9 2 11’ which means run away has been said and used by almost every Indian, once in a life. But, only few of them knows the mystery behind the concept of ‘9 2 11’. Today, CisTheta is presenting you some reasons that claimed the origin of idiom ‘9 2 11’ is done by them.


Before advent of announcement system in Indian Railways ringing of bell was used to alert passenger about arrival of train on platform. It is still used in small stations in India.

The bell was struck 5 times when train used to reach 2 station before destination, 4 times when it reached one station before destination, thus bell struck 5+4 = 9 before coming to station and bell would struck 2 times before leaving platform.

Traditional bell at platform on Chandigarh Station

Hence the phrase Nau Do Gyarah (9+2 = 11) meaning to ‘run away’. It is unfortunate that there is no mention of the origin of this phrase on internet.


In mathematics, 9 is the maximum possible number with one digit and even though it’s maximum it’s still belong to its old category that is single digit number(first table of mathematics), and it needs just one to be a double digit to jump /run  away from the state of being single digit(old state).
Now why not 1 ,and 2 only?
Even though 10 is the smallest number with 2 digit , it’s still categorized in first table only and not the 2nd table(11-20).

To  move away from state of being single with a noticeable displacement ,9 needs 2 to be 11.

Never mind but it’s just a crazy thought.