Introduction - If you have any usage issues, please Google them yourself
buffonIn the 18th century, Buffon proposed the following question: Let us have a parallel and equidistant wood paved the floor (pictured), now free to throw a length of wood than the distance between the small needle, and a needle The probability of grain intersecting. And with this probability, Buffon proposed a method of calculating the pi - random acupuncture method. This is the problem of Po Feng investment