"Knowledge changes destiny, science and technology prosper the motherland." Primary and secondary schools in our city hold a Science and Technology Games every year. The picture below shows a school

"Knowledge changes destiny, science and technology prosper the motherland." Primary and secondary schools in our city hold a Science and Technology Games every year. The picture below shows a school in our city participating in the Science and Technology Games in 2009.

Solution: (1) 4, 6;

(2) 24, 120, the figure is “omitted”;

(3) 32÷80=0.4 , 0.4×2485=994,

Answer: The number of winners participating in the model aircraft competition this year is about 994.