The maths teacher was busy taking her class...Students were making a lot of noise.She wanted to bring everybody to alert.She said"students now I will raise a question ...no pen and paper ...calculate in your mind"
Students shouted "yes"
Teacher started"A bus left the busstand with 25 Passangers...
It stopped in the first stop and 2 of them got out
It passed the next stop 5 Passangers boarded
It passed the next stop 2Passangers boarded
It passed the next stop 10 Passangers got down
........and so on
At the end almost all students were ready with the answer
Teacher said " now shall I raise the question and all students screamed..YES
Teacher asked"how many stops did bus stopped and paused
There was pin drop silence and all students were looking at each other
