In maths class teacher wrote a problem in the board and asked
Teacher : Dundumol, can you solve this problem..?
Dundumol : Sorry miss, I dont know
Teacher : Aarumon..?
Aarumon : I dont know miss
Teacher : Tintumon, Can you solve.?
Tintumon : Yes, miss
Tintumon went to the board and solved the problem in seconds by rubbing the board using a duster