There are 100 chicks sitting quietly in a circle. Suddenly, each chick freely pecks(啄) the chick to its left or right. What is the expected number of unpecked chicks? Can you solve it?
Leo (the 13-year-old boy) gave the right answer, 25, in just 0.9 of a second. He got this question in the final round of the Raytheon Maths counts competition. Thanks to that correct answer, he won it this year. Last year, he was second.
"I was surprised that I won," he said. "I was kind of worried that was the wrong answer."
This year, more than 100,000 students took part in the competitions. And 224 students entered the final round. Leo will receive a ﹩20,000 college scholarship and free trip to US Space Camp.
Leo is talented at Maths. And unlike other students, he studies at home. His mother Mary quit her job as a writing teacher to home—school her son. She thought traditional school couldn't meet his needs. He often asks his mother to write difficult Maths problems so that he can solve them.
When Leo was 8, he started taking college classes. Even on vacation, he still tries to learn Maths. He once asked his parents to take him to a Maths library at the University of Texas. People around him regard him as a Maths genius.
