"I have two questions for you. If you can answer the first one correctly, then you won't have to answer the second one," the teacher said. "How many hairs do you have o your head?"
"Twelve Million," replied the student.
"How do you know?" asked the teacher.
"You said I need not answer that." the student replied.
Teacher: I have two question , if you can answer the first question , then you don't need to answer the second one .
How many hair do you have? The teacher asked.
1.2 billion hair. The student answered.
How do you know that ? The teacher asked.
I don't need to answer the second one . The student replied.