A college student is appearing for his University final
examination which consists of Y/N type questions. He takes his seat
in the examination hall, stares at the question paper for five
minutes, and then in a fit of inspiration takes his wallet out,
removes a coin and starts tossing the coin and marking the answer
sheet - Y for Heads and N for Tails.
Within half an hour he is all done whereas the rest of the class is
sweating it out.
During the last few minutes, he is seen desperately throwing the
coin, sweating and sweating. The invigilator, alarmed, approaches
him and asks what is going on.
"Oh, I finished the exam in half and hour". "But ...", he says, "I
am rechecking my answers and am not able to tally them with what I
wrote."
