Question

一元二次方程实际问题的传播问题中单循环和双循环有什么区别

Answer 1

单循环问题：设参加队伍有n个队，则 总的比赛场数为二分之一n(n-1)场
双循环问题：···················································································n(n-1)场

Answer 2

单循环为：1/2n（n-1）
双循环为：n(n-1)

Answer 3

多看看书就好了。