Mo Shao stood on the podium, "Jiao Ke", said: "students, I want to tell you a message, in the afternoon of next Friday, there will be a Mathematical Olympic competition in the city, the top three, there will be corresponding rewards, excuse me, our class has several willing to participate, now you can apply to me."

the class was silent. This Olympic competition is not for ordinary people to take part in. The above questions are dozens of times more difficult than their learning content. 120 points of the test paper can be scored 30 points, which is good. Those who want to break their heads can get that score....