Sarah reported for her university final
examination which consists
of "yes/no" type questions. She takes her seat in the examination hall,
stares at the question paper for five minutes, and then in a fit of
takes her purse out, removes a coin and starts tossing the coin and
marking the answer sheet "Yes" for Heads and "No" for
Within half an hour she is all done, whereas the rest of the class
it out. During the last few minutes, she is seen desperately throwing the
coin, swearing and sweating.
The moderator, alarmed, approaches her and asks what is going on.
"I finished the exam in half an hour, but I'm rechecking the