Once a teacher asked a pupil at school.
T: What is the average speed of cars in the city centre ?
S: I don't know.
T: Who is the father of the country?(in india)
S: I don't know.
T: What does the hen lay?
S: I don't know.
T: go home ask your parents and tell me answers tomorrow!
Student saw the teacher the nect day in the school hall and quickly run towards her and answered"MAHATMA GANDI LAYS EGGS at the average speed 40"