The blonde reported for her University final examination which consisted of "true/false" questions. She took her seat in the examination hall, stared at the question paper for five minutes, and then in a fit of inspiration took out her purse, removed a coin, and started tossing the coin and marking the answer sheet- True for Heads and False for Tails. Within half an hour she had completed the exam while the rest of the class was feverishly continuing to work. During the last few minutes, she desperately began throwing the coin, swearing, and sweating. The instructor, alarmed, approached her and asked if there was a problem. "I finished the exam in half an hour," she replied, "Now, I am rechecking my answers."